Pub Date : 2023-04-12DOI: 10.24018/ejphysics.2023.5.2.246
W. Daywitt
There are two types of gravity bodies, dark gravity bodies (DGB)s and charged bodies that obey the Newton equation. The Planck vacuum (PV) theory here derives equations for and illustrates both types of bodies. It will turn out that the dark force is a pure mass force like the Einstein equations, while the Newton force is more akin to a Coulomb force.
{"title":"Gravity Bodies in the Planck Vacuum Theory","authors":"W. Daywitt","doi":"10.24018/ejphysics.2023.5.2.246","DOIUrl":"https://doi.org/10.24018/ejphysics.2023.5.2.246","url":null,"abstract":"There are two types of gravity bodies, dark gravity bodies (DGB)s and charged bodies that obey the Newton equation. The Planck vacuum (PV) theory here derives equations for and illustrates both types of bodies. It will turn out that the dark force is a pure mass force like the Einstein equations, while the Newton force is more akin to a Coulomb force.","PeriodicalId":292629,"journal":{"name":"European Journal of Applied Physics","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133423975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-31DOI: 10.24018/ejphysics.2023.5.2.242
J. Stávek
There were derived many forms of the Planck distribution function (PDF) since its discovery by Planck in 1900 and formulae for the positions of Wien´s peaks in those distributions. There were published many attempts searching for the hidden carriers of heat because the existing known heat effects of photons cannot interpret all observed data. In this presented model we work with concept of fission of one Solar photon into two thermons – the missing carriers of heat. Properties of Solar photons and Solar thermons are compared for the surface of the Sun and in the vicinity of the Earth. Solar thermons obey the Stefan-Boltzmann law and their heat action can be experimentally analyzed in the whole volume of the Solar System. One of those effects can explain the microwave background radiation as the reflection of thermons on the surface of the Termination shock. The measure of the quantity of heat S for thermons is constant in agreement with the Carnot´s model. The specific heat of solids was newly interpreted as the joint action of three types of thermons with frequency ν/2, ν, and 2ν. The ratio of these three thermons can be experimentally determined from infrared spectra of those studied solids. This model could bring a new way to better describe the old, predicted concept of “dark heat” as appeared many times in the historical literature. We have summarized the known forms of the PDF and positions of Wien´s peaks in order to search some hidden properties in those mathematical structures. It will be shown that these very well-known formulae to all scholars might still keep some hidden surprising properties.
{"title":"What is Hidden in the Planck Distribution Function and the Wien´s Peaks? III. Fission of Solar Photons into Thermons (“Dark Heat”)","authors":"J. Stávek","doi":"10.24018/ejphysics.2023.5.2.242","DOIUrl":"https://doi.org/10.24018/ejphysics.2023.5.2.242","url":null,"abstract":"There were derived many forms of the Planck distribution function (PDF) since its discovery by Planck in 1900 and formulae for the positions of Wien´s peaks in those distributions. There were published many attempts searching for the hidden carriers of heat because the existing known heat effects of photons cannot interpret all observed data. In this presented model we work with concept of fission of one Solar photon into two thermons – the missing carriers of heat. Properties of Solar photons and Solar thermons are compared for the surface of the Sun and in the vicinity of the Earth. Solar thermons obey the Stefan-Boltzmann law and their heat action can be experimentally analyzed in the whole volume of the Solar System. One of those effects can explain the microwave background radiation as the reflection of thermons on the surface of the Termination shock. The measure of the quantity of heat S for thermons is constant in agreement with the Carnot´s model. The specific heat of solids was newly interpreted as the joint action of three types of thermons with frequency ν/2, ν, and 2ν. The ratio of these three thermons can be experimentally determined from infrared spectra of those studied solids. This model could bring a new way to better describe the old, predicted concept of “dark heat” as appeared many times in the historical literature. We have summarized the known forms of the PDF and positions of Wien´s peaks in order to search some hidden properties in those mathematical structures. It will be shown that these very well-known formulae to all scholars might still keep some hidden surprising properties.","PeriodicalId":292629,"journal":{"name":"European Journal of Applied Physics","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114677361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-10DOI: 10.24018/ejphysics.2023.5.2.241
J. Stávek
There were derived many forms of the Planck distribution function (PDF) since its discovery by Planck in 1900 and formulae for the positions of Wien´s peaks in those distributions. There are published many attempts searching for the quantum gravity model. In this presented model we work with concept of fusion of two Solar photons into one graviton inside of atoms. The PDF and Wien´s peak for graviton number distribution was presented. The formula for the description of the graviton momentum distribution was derived. Three tests are proposed to estimate the reality of this model. The first test searches for the dependence of the Solar gravitational constant on the value of the Rydberg constant of atoms used in the source masses. There were collected experimental data for the big G value during the last decade and the confirmation of this prediction is promising. The second test should analyze the influence of temperature of other central stars on the gravitation events in those surroundings. The third test should explore the effect of the magnitude of the graviton momentum in other Stellar Systems on gravitational effects in those systems. This could be a new way to remove fitting data with the introduction of models with “dark matter”. We have summarized the known forms of the PDF and positions of Wien´s peaks in order to search some hidden properties in those mathematical structures. It will be shown that these very well-known formulae to all scholars might still keep some hidden surprising properties.
{"title":"What is Hidden in the Planck Distribution Function and the Wien´s Peaks? II. Do Atoms Fuse Solar Photons into Gravitons?","authors":"J. Stávek","doi":"10.24018/ejphysics.2023.5.2.241","DOIUrl":"https://doi.org/10.24018/ejphysics.2023.5.2.241","url":null,"abstract":"There were derived many forms of the Planck distribution function (PDF) since its discovery by Planck in 1900 and formulae for the positions of Wien´s peaks in those distributions. There are published many attempts searching for the quantum gravity model. In this presented model we work with concept of fusion of two Solar photons into one graviton inside of atoms. The PDF and Wien´s peak for graviton number distribution was presented. The formula for the description of the graviton momentum distribution was derived. Three tests are proposed to estimate the reality of this model. The first test searches for the dependence of the Solar gravitational constant on the value of the Rydberg constant of atoms used in the source masses. There were collected experimental data for the big G value during the last decade and the confirmation of this prediction is promising. The second test should analyze the influence of temperature of other central stars on the gravitation events in those surroundings. The third test should explore the effect of the magnitude of the graviton momentum in other Stellar Systems on gravitational effects in those systems. This could be a new way to remove fitting data with the introduction of models with “dark matter”. We have summarized the known forms of the PDF and positions of Wien´s peaks in order to search some hidden properties in those mathematical structures. It will be shown that these very well-known formulae to all scholars might still keep some hidden surprising properties.","PeriodicalId":292629,"journal":{"name":"European Journal of Applied Physics","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127427525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-06DOI: 10.24018/ejphysics.2023.5.2.240
J. Stávek
There were derived many forms of the Planck distribution function (PDF) since its discovery by Planck in 1900 and formulae for the positions of Wien´s peaks in those distributions. There are three features of the Solar photons – their refrangibility, their heat effect, and their chemical effect. The first feature – their refrangibility – can be modelled using the linear-wavelength dispersion rule for spectrometers with diffraction gratings and using the frequency-square rule for spectrometers with prisms. However, there are no accepted forms of the PDF to model heat effect of the Solar photons on atoms and molecules, and to model the effect of the PDF on chemical reactions where the Solar photons play very significant role. We have summarized the known forms of the PDF and positions of Wien´s peaks in order to search some hidden properties in those mathematical structures. It will be shown that these very well-known formulae to all scholars might still keep some hidden surprising properties.
{"title":"What is Hidden in the Planck Distribution Function and the Wien´s Peaks? I. Three Features of the Solar Photons","authors":"J. Stávek","doi":"10.24018/ejphysics.2023.5.2.240","DOIUrl":"https://doi.org/10.24018/ejphysics.2023.5.2.240","url":null,"abstract":"There were derived many forms of the Planck distribution function (PDF) since its discovery by Planck in 1900 and formulae for the positions of Wien´s peaks in those distributions. There are three features of the Solar photons – their refrangibility, their heat effect, and their chemical effect. The first feature – their refrangibility – can be modelled using the linear-wavelength dispersion rule for spectrometers with diffraction gratings and using the frequency-square rule for spectrometers with prisms. However, there are no accepted forms of the PDF to model heat effect of the Solar photons on atoms and molecules, and to model the effect of the PDF on chemical reactions where the Solar photons play very significant role. We have summarized the known forms of the PDF and positions of Wien´s peaks in order to search some hidden properties in those mathematical structures. It will be shown that these very well-known formulae to all scholars might still keep some hidden surprising properties.","PeriodicalId":292629,"journal":{"name":"European Journal of Applied Physics","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114547622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-26DOI: 10.24018/ejphysics.2023.5.1.231
M. H. Jasim, Tabark S. Hashesh, S. A. Khalaf
The fractions in dispersive of the volume and surface absorption potential integral to the total real volume potential integral, were evaluated numerically for neutron-nucleus interaction. The dispersive fraction values have been adopted in modifying the accuracy of the optical potential of the reaction, which in turn improved the calculated cross-section for neutron-nucleus interaction in accordance with published experimental measurements. The use of dispersive fraction to the potential integral was applied for the (n+99Tc) reaction and the calculated cross-sections were compared with published works in neutron energy 30MeV.
{"title":"Dispersive Fraction in Volume and Surface Potential Absorption Integral to the Neutron-99Tc Reaction","authors":"M. H. Jasim, Tabark S. Hashesh, S. A. Khalaf","doi":"10.24018/ejphysics.2023.5.1.231","DOIUrl":"https://doi.org/10.24018/ejphysics.2023.5.1.231","url":null,"abstract":"The fractions in dispersive of the volume and surface absorption potential integral to the total real volume potential integral, were evaluated numerically for neutron-nucleus interaction. The dispersive fraction values have been adopted in modifying the accuracy of the optical potential of the reaction, which in turn improved the calculated cross-section for neutron-nucleus interaction in accordance with published experimental measurements. The use of dispersive fraction to the potential integral was applied for the (n+99Tc) reaction and the calculated cross-sections were compared with published works in neutron energy 30MeV.","PeriodicalId":292629,"journal":{"name":"European Journal of Applied Physics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130889709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-20DOI: 10.24018/ejphysics.2023.5.1.239
R. Tülek
The structural and optical properties of InxGa1-xN/InyGa1-yN multi quantum well (MQW) light emitting devices with/without electron injection layers were studied. The samples with electron injection layer consist of step-graded (GIE) and two step staircase (SEI) electron injection layer between n-type GaN and MQWs active region. Edge and screw type of dislocation densities were deduced from High Resolution X-Ray Diffraction (HR-XRD) curves and no significant difference were realized. The zeroth and higher order satellite peaks were more clearly observed in the sample without electron injection layer. Optical characterization was carried out by temperature dependent photoluminescence (PL) technique. It was found that the PL densities of samples with step-graded and two step-staircase electron injection layers had almost two times lower temperature dependence compared to the reference sample without electron injection layer. On the other hand, the line width of the photoluminescence peak associated with MQWs is much narrower at low temperature for sample without electron injection layer than the other two samples.
{"title":"Photoluminescence Properties of InGaN/InGaN MQWs with Different Electron Injection Layers","authors":"R. Tülek","doi":"10.24018/ejphysics.2023.5.1.239","DOIUrl":"https://doi.org/10.24018/ejphysics.2023.5.1.239","url":null,"abstract":"The structural and optical properties of InxGa1-xN/InyGa1-yN multi quantum well (MQW) light emitting devices with/without electron injection layers were studied. The samples with electron injection layer consist of step-graded (GIE) and two step staircase (SEI) electron injection layer between n-type GaN and MQWs active region. Edge and screw type of dislocation densities were deduced from High Resolution X-Ray Diffraction (HR-XRD) curves and no significant difference were realized. The zeroth and higher order satellite peaks were more clearly observed in the sample without electron injection layer. Optical characterization was carried out by temperature dependent photoluminescence (PL) technique. It was found that the PL densities of samples with step-graded and two step-staircase electron injection layers had almost two times lower temperature dependence compared to the reference sample without electron injection layer. On the other hand, the line width of the photoluminescence peak associated with MQWs is much narrower at low temperature for sample without electron injection layer than the other two samples.","PeriodicalId":292629,"journal":{"name":"European Journal of Applied Physics","volume":"277 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114078468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-14DOI: 10.24018/ejphysics.2023.5.1.232
J. Stávek
The Hydrogen wall found in the Voyager 1 data was modeled as the spherical mirror reflecting the Solar gravitational radiation back to the Solar System. A similar proposal appeared in the forgotten publication of Jaumann in 1912. The formula describing the anomalous acceleration of Pioneer 10 and 11 towards the Sun was derived. The decreasing temperature in the Solar System decreases slightly the mass of both Pioneers 10 and 11 as it was predicted by Einstein in 1907. The experimental value for both Pioneers was published as ap = (8.74 ± 1.33) * 10-10 ms-2. This new model predicts the value of the anomalous acceleration towards the Sun as ap = (8.50 – 0.0106 * x) * 10-10 ms-2 AU-1 where x is the distance of Pioneers from the Sun in astronomical unit AU. The annual amplitude visible in the Pioneer data (~ 1.6 *10-10 ms-2) was interpreted as the reflection of the Earth´s gravitational radiation from the surface of the Sun – the Earth´s self-gravitational effect with the predicted value 1.49 * 10-10 ms-2. The diurnal amplitude visible in the Pioneer anomaly (~ 3 * 10-12 ms-2) was interpreted as the result of Newton´s third law – for every action, there is an equal and opposite reaction between the Sun and the Earth: the diurnal amplitude was derived as 3.05 * 10-12 ms-2. It will be very helpful to get more experimental data from the next missions towards the Termination shock, the Hydrogen wall using the spacecraft of the type Voyager and Pioneer.
{"title":"Solar Gravitational Radiation Reflected on the Hydrogen Wall might explain the Pioneer Anomaly: Do Mirrors for Gravitational Radiation Exist?","authors":"J. Stávek","doi":"10.24018/ejphysics.2023.5.1.232","DOIUrl":"https://doi.org/10.24018/ejphysics.2023.5.1.232","url":null,"abstract":"The Hydrogen wall found in the Voyager 1 data was modeled as the spherical mirror reflecting the Solar gravitational radiation back to the Solar System. A similar proposal appeared in the forgotten publication of Jaumann in 1912. The formula describing the anomalous acceleration of Pioneer 10 and 11 towards the Sun was derived. The decreasing temperature in the Solar System decreases slightly the mass of both Pioneers 10 and 11 as it was predicted by Einstein in 1907. The experimental value for both Pioneers was published as ap = (8.74 ± 1.33) * 10-10 ms-2. This new model predicts the value of the anomalous acceleration towards the Sun as ap = (8.50 – 0.0106 * x) * 10-10 ms-2 AU-1 where x is the distance of Pioneers from the Sun in astronomical unit AU. The annual amplitude visible in the Pioneer data (~ 1.6 *10-10 ms-2) was interpreted as the reflection of the Earth´s gravitational radiation from the surface of the Sun – the Earth´s self-gravitational effect with the predicted value 1.49 * 10-10 ms-2. The diurnal amplitude visible in the Pioneer anomaly (~ 3 * 10-12 ms-2) was interpreted as the result of Newton´s third law – for every action, there is an equal and opposite reaction between the Sun and the Earth: the diurnal amplitude was derived as 3.05 * 10-12 ms-2. It will be very helpful to get more experimental data from the next missions towards the Termination shock, the Hydrogen wall using the spacecraft of the type Voyager and Pioneer.","PeriodicalId":292629,"journal":{"name":"European Journal of Applied Physics","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129515082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Here in this paper, we show that the basic reason for this diffusion is the intermolecular attraction forces due to Newtonian gravitational attraction forces acting in a combined way which are the vectorial sum of all the attraction forces acting on molecules as defined as SITA forces Multi Molecule Theory. Some pairs of molecules hit each other and bounce like rubber balls and diffuse because of these SITA forces. Here some of the molecules are going to higher distances from the hitting centers. Earlier we formulated and showed the three states of matter in a similar way. Here we took a Nano-drop-let of contaminated water as a container. We are calculating intermolecular attraction forces between molecules and finding the movements of molecules as a result of the attraction by all the other molecules at the molecular level.
{"title":"The Basic Nature of Intermolecular Attraction Forces Newtonian Gravitation Shown by Deriving ‘Diffusion’","authors":"Satyavarapu Naga Parameswara Gupta, Kiron Koti Shesha Manikya Satyavarapu, Satyavarapu Subba Vamsi Krishna","doi":"10.24018/ejphysics.2023.5.1.217","DOIUrl":"https://doi.org/10.24018/ejphysics.2023.5.1.217","url":null,"abstract":"Here in this paper, we show that the basic reason for this diffusion is the intermolecular attraction forces due to Newtonian gravitational attraction forces acting in a combined way which are the vectorial sum of all the attraction forces acting on molecules as defined as SITA forces Multi Molecule Theory. Some pairs of molecules hit each other and bounce like rubber balls and diffuse because of these SITA forces. Here some of the molecules are going to higher distances from the hitting centers. Earlier we formulated and showed the three states of matter in a similar way. Here we took a Nano-drop-let of contaminated water as a container. We are calculating intermolecular attraction forces between molecules and finding the movements of molecules as a result of the attraction by all the other molecules at the molecular level.","PeriodicalId":292629,"journal":{"name":"European Journal of Applied Physics","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131763137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-09DOI: 10.24018/ejphysics.2022.4.6.225
A. Sfarti
The current paper derives the most general form of the relativistic Doppler effect and of the relativistic aberration starting from base principles available in classical electrodynamics and from the Lorentz transforms of the energy-momentum. Unlike any other material before us, we derive the relativistic Doppler formula for the case of both source and receiver moving in arbitrary directions with respect to an inertial reference frame. Thus, our derivation employs three different reference frames: one commoving with the source, the second one commoving with the receiver and the third one, commoving with the observer. The general formula, once derived, allows us to tease out all the specific cases, like the one from the perspective of the receiver, the one expressing the transverse Doppler effect, and the general formula for the Doppler rotor effect. We close with the derivation of the general formula for relativistic light aberration.
{"title":"QED-Based Derivation of the General Forms of the Relativistic Doppler Effect and of the Relativistic Aberration","authors":"A. Sfarti","doi":"10.24018/ejphysics.2022.4.6.225","DOIUrl":"https://doi.org/10.24018/ejphysics.2022.4.6.225","url":null,"abstract":"The current paper derives the most general form of the relativistic Doppler effect and of the relativistic aberration starting from base principles available in classical electrodynamics and from the Lorentz transforms of the energy-momentum. Unlike any other material before us, we derive the relativistic Doppler formula for the case of both source and receiver moving in arbitrary directions with respect to an inertial reference frame. Thus, our derivation employs three different reference frames: one commoving with the source, the second one commoving with the receiver and the third one, commoving with the observer. The general formula, once derived, allows us to tease out all the specific cases, like the one from the perspective of the receiver, the one expressing the transverse Doppler effect, and the general formula for the Doppler rotor effect. We close with the derivation of the general formula for relativistic light aberration.","PeriodicalId":292629,"journal":{"name":"European Journal of Applied Physics","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124704128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-09DOI: 10.24018/ejphysics.2022.4.6.228
R. Tülek, S. Gökden, A. Teke, E. Arslan, E. Özbay
Scattering mechanisms that limit the mobility of two-dimensional electron gas (2DEG) in AlInGaN/GaN heterojunctions with three different barrier layer thicknesses of 37.2 (sample A), 10.6 (sample B) and 4.30 (sample C) nm were studied. Hall measurements were performed between 12 and 350 K. Mobilities limited by scattering due to acoustic and optic phonons, dislocation, interface roughness, and alloy disorder were used in the calculation. It was found that scattering, predominantly due to interface roughness, determine the Hall mobility for all samples at different strengths. The highest electron mobility of 492 cm2V-1s-1 at room temperature is obtained for sample B with a high sheet density of about 4.43x1013 cm-2 and a corresponding sheet resistance of 287 Ω/.
{"title":"Predominant Scattering Mechanisms in Quaternary AlInGaN/GaN Heterostructures","authors":"R. Tülek, S. Gökden, A. Teke, E. Arslan, E. Özbay","doi":"10.24018/ejphysics.2022.4.6.228","DOIUrl":"https://doi.org/10.24018/ejphysics.2022.4.6.228","url":null,"abstract":"Scattering mechanisms that limit the mobility of two-dimensional electron gas (2DEG) in AlInGaN/GaN heterojunctions with three different barrier layer thicknesses of 37.2 (sample A), 10.6 (sample B) and 4.30 (sample C) nm were studied. Hall measurements were performed between 12 and 350 K. Mobilities limited by scattering due to acoustic and optic phonons, dislocation, interface roughness, and alloy disorder were used in the calculation. It was found that scattering, predominantly due to interface roughness, determine the Hall mobility for all samples at different strengths. The highest electron mobility of 492 cm2V-1s-1 at room temperature is obtained for sample B with a high sheet density of about 4.43x1013 cm-2 and a corresponding sheet resistance of 287 Ω/.","PeriodicalId":292629,"journal":{"name":"European Journal of Applied Physics","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128268060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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