Pub Date : 1985-12-31DOI: 10.1515/9783112494844-047
G. Christakudis, S. Plachkova, E. S. Avilov, L. E. Shelimova, N. Abrikosov
{"title":"Transport Phenomena of Ferroelectric Solid Solutions (GeTe)1-x((Ag2Te)1-y(Sb2Te3)y)z with y = 0.60, 0≤x≤1 at 300 K","authors":"G. Christakudis, S. Plachkova, E. S. Avilov, L. E. Shelimova, N. Abrikosov","doi":"10.1515/9783112494844-047","DOIUrl":"https://doi.org/10.1515/9783112494844-047","url":null,"abstract":"","PeriodicalId":11087,"journal":{"name":"Day 1 Tue, January 11, 2022","volume":"50 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1985-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90688979","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 : 1985-12-31DOI: 10.1515/9783112494844-063
V. Tkachev, V. B. Shepilo, A. Zaitsev
{"title":"Cathodoluminescence of Cubic Boron Nitride - Mossbauer-Type Spectra","authors":"V. Tkachev, V. B. Shepilo, A. Zaitsev","doi":"10.1515/9783112494844-063","DOIUrl":"https://doi.org/10.1515/9783112494844-063","url":null,"abstract":"","PeriodicalId":11087,"journal":{"name":"Day 1 Tue, January 11, 2022","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1985-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79673458","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}
The stability of self-trapped holes in ionic crystals with NaCl and CsCl structures is studied on the basis of the small polaron theory. The model Hamiltonian contains four free parameters: the coupling constants for hole with acoustic and optical phonons, the site off-diagonal coupling, and the mass ratio of cation to anion. The overall and systematic features of the hole stability are investigated by means of phase diagrams in the space spanned by the parameters. It is found that the stability drastically depends on the crystal structure. By fitting the parameters, results are obtained which agree with the experiments. Nous avons etudie la stabilite des trous auto-pieges dans les cristaux ioniques aux structures NaCl et CsCl conformement a la theorie du petit polaron. L'hamiltonien modele contient quatre parametres libres; les constantes de couplage du trou avec les phonons acoustiques et optiques, le couplage site-non diagonal, le rapport des masses du cation et de l'anion. Les traits globaux et systematiques de la stabilite des trous sont recherches au moyen du diagramme de phase dans l'espace des parametres. On a trouve que la stabilite depend rigoureusement de la structure cristalline. En ajustant les parametres, nous avons obtenu les resultats qui sont d'accord avec ceux obtenus experimentalement.
基于小极化子理论，研究了NaCl和CsCl结构离子晶体中自困空穴的稳定性。模型哈密顿量包含四个自由参数:空穴与声子和声子的耦合常数、位置非对角线耦合和阳离子与阴离子的质量比。利用参数所跨空间的相图研究了孔稳定性的整体和系统特征。结果表明，晶体的稳定性与晶体结构密切相关。通过对参数的拟合，得到了与实验相符的结果。在小极化子理论的基础上，研究了双极化子的稳定性和双极化子的结构。L'hamiltonien模型大陆四分参数库;les恒德couplage du勇敢用莱斯声子acoustiques optique, le couplage site-non对角线,le融洽des群众du阳离子et de l 'anion。“Les traits globaux et systematiques de la stabilite des trotros”，“研究相位图的动力学和参数空间的动力学”。严格的晶体结构的重新利用取决于稳定性。在参数不断调整的情况下，得到的结果与常规实验结果不一致。
{"title":"Crystal Structure Dependence of Hole Stability in Ionic Crystals","authors":"Y. Nakaoka","doi":"10.1002/PSSB.2221270133","DOIUrl":"https://doi.org/10.1002/PSSB.2221270133","url":null,"abstract":"The stability of self-trapped holes in ionic crystals with NaCl and CsCl structures is studied on the basis of the small polaron theory. The model Hamiltonian contains four free parameters: the coupling constants for hole with acoustic and optical phonons, the site off-diagonal coupling, and the mass ratio of cation to anion. The overall and systematic features of the hole stability are investigated by means of phase diagrams in the space spanned by the parameters. It is found that the stability drastically depends on the crystal structure. By fitting the parameters, results are obtained which agree with the experiments. \u0000 \u0000 \u0000 \u0000Nous avons etudie la stabilite des trous auto-pieges dans les cristaux ioniques aux structures NaCl et CsCl conformement a la theorie du petit polaron. L'hamiltonien modele contient quatre parametres libres; les constantes de couplage du trou avec les phonons acoustiques et optiques, le couplage site-non diagonal, le rapport des masses du cation et de l'anion. Les traits globaux et systematiques de la stabilite des trous sont recherches au moyen du diagramme de phase dans l'espace des parametres. On a trouve que la stabilite depend rigoureusement de la structure cristalline. En ajustant les parametres, nous avons obtenu les resultats qui sont d'accord avec ceux obtenus experimentalement.","PeriodicalId":11087,"journal":{"name":"Day 1 Tue, January 11, 2022","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1985-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82390065","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}
A study is made of an excess electron placed in a perfect Ne crystal subjected to hydrostatic compression. The conduction bands (excess electron energy spectrum) are calculated from first principles using the OPW method. The Phillips-Kleinman potential is constructed using atom-like Wannier functions. At normal pressure the band structure is very similar to that calculated by other methods which involve the expansion of the basis in plane waves and agrees well with available experimental data. As the crystal is compressed the conduction bands are deformed, they become broader in energy, the actual minimum remains in the centre of the Brillouin zone, and the effective mass at this point decreases. [Russian Text Ignored].
{"title":"Pressure Effect on Band Structure of Neon","authors":"E. V. Zarochentsev, K. Tolpygo, E. Troitskaya","doi":"10.1002/PSSB.2221270117","DOIUrl":"https://doi.org/10.1002/PSSB.2221270117","url":null,"abstract":"A study is made of an excess electron placed in a perfect Ne crystal subjected to hydrostatic compression. The conduction bands (excess electron energy spectrum) are calculated from first principles using the OPW method. The Phillips-Kleinman potential is constructed using atom-like Wannier functions. At normal pressure the band structure is very similar to that calculated by other methods which involve the expansion of the basis in plane waves and agrees well with available experimental data. As the crystal is compressed the conduction bands are deformed, they become broader in energy, the actual minimum remains in the centre of the Brillouin zone, and the effective mass at this point decreases. \u0000 \u0000 \u0000 \u0000[Russian Text Ignored].","PeriodicalId":11087,"journal":{"name":"Day 1 Tue, January 11, 2022","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1985-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81164443","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 : 1985-12-31DOI: 10.1515/9783112494844-054
A. Pires, M. E. Gouvea
{"title":"Non-Linear Dynamics of a Classical One-Dimensional Antiferromagnet with Two Anipotropies","authors":"A. Pires, M. E. Gouvea","doi":"10.1515/9783112494844-054","DOIUrl":"https://doi.org/10.1515/9783112494844-054","url":null,"abstract":"","PeriodicalId":11087,"journal":{"name":"Day 1 Tue, January 11, 2022","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1985-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90887191","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}
The changes in lattice specific heat and transition temperature of vanadium doped with tungsten impurities are studied systematically by using the low-concentration Green's function theory. The nearest neighbour radial and angular force-constant-changes are evaluated by fitting the measured enhanced phonon heat capacity of the alloy. The electron-phonon interaction as well as electronimpurity scattering are discussed in detail. The present theory shows reasonably good agreement with the experimental measurements on specific heat and with those on superconducting transition temperature of the alloy. Mittels der Theorie Greenscher Funktionen fur niedrige Konzentrationen werden die Anderungen der spezifischen Gitterwarme und die Ubergangstemperatur von Vanadium, das mit Wolfram dotiert ist, systematisch untersucht. Die Anderungen der radialen- und Winkel-Kraftkonstanten nachster Nachbarn werden durch Anpassung der erhohten Phononenwarmekapazitat der Legierung berechnet. Sowohl die Elektron-Phonon-Wechselwirkung als auch die Elektronen-Storstellen-Streuung werden ausfuhrlich diskutiert. Die vorgestellte Theorie zeigt eine vernunftige Ubereinstimmung mit den experimentellen Messungen der spezifischen Warme und Supraleitungsubergangstemperatur der Legierung.
利用低浓度格林函数理论，系统地研究了掺杂钨杂质后钒的晶格比热和转变温度的变化。通过拟合所测得的增强声子热容，评估了最近邻居径向和角力常数的变化。详细讨论了电子-声子相互作用和电子杂质散射。该理论与合金的比热和超导转变温度的实验测量结果吻合较好。钒的高温和高温下的高温和高温下的高温和高温下的高温下的高温和高温下的高温。研究放射学与温克-克拉弗-康斯特的关系。研究放射学与温克-克拉弗特的关系。Sowohl die elektronen - phonon - wehselwirkung也auch die Elektronen-Storstellen-Streuung werden ausfuhrlich diskutiert。[3] [j] [j] .高温高温理论与高温高温实验。
{"title":"Lattice Specific Heat and Superconducting Transition Temperature of a V:W Alloy","authors":"P. C. Maithani, M. Tiwari","doi":"10.1002/PSSB.2221270106","DOIUrl":"https://doi.org/10.1002/PSSB.2221270106","url":null,"abstract":"The changes in lattice specific heat and transition temperature of vanadium doped with tungsten impurities are studied systematically by using the low-concentration Green's function theory. The nearest neighbour radial and angular force-constant-changes are evaluated by fitting the measured enhanced phonon heat capacity of the alloy. The electron-phonon interaction as well as electronimpurity scattering are discussed in detail. The present theory shows reasonably good agreement with the experimental measurements on specific heat and with those on superconducting transition temperature of the alloy. \u0000 \u0000 \u0000 \u0000Mittels der Theorie Greenscher Funktionen fur niedrige Konzentrationen werden die Anderungen der spezifischen Gitterwarme und die Ubergangstemperatur von Vanadium, das mit Wolfram dotiert ist, systematisch untersucht. Die Anderungen der radialen- und Winkel-Kraftkonstanten nachster Nachbarn werden durch Anpassung der erhohten Phononenwarmekapazitat der Legierung berechnet. Sowohl die Elektron-Phonon-Wechselwirkung als auch die Elektronen-Storstellen-Streuung werden ausfuhrlich diskutiert. Die vorgestellte Theorie zeigt eine vernunftige Ubereinstimmung mit den experimentellen Messungen der spezifischen Warme und Supraleitungsubergangstemperatur der Legierung.","PeriodicalId":11087,"journal":{"name":"Day 1 Tue, January 11, 2022","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1985-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73860749","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}
For the description of beating effects and of the angular dependence of Shubnikov-De Haas oscillations (SDH) of the narrow-gap semiconductor HgSe, a method is developed which can be used to estimate parameters from measurements of the transverse SDH effect. Also the influence of quadratic terms in the energy versus magnetic induction relation of the Landau levels can be studied. Zur Beschreibung von Schwebungseffekten und der Winkelabhangigkeit von Shubnikov-De Haas-Oszillationen (SDH) des Zero-Gap-Halbleiters HgSe wird eine Methode entwickelt, die es gestattet, auf Messungen des transversalen SDH-Effektes ein Parameterschatzverfahren anzu-wenden. Ebenso kann der Einflus von quadratischen Termen in der Abhangigkeit der Energie von der magnetischen Induktion der Landauniveaus untersucht werden.
{"title":"Analysis of Shubnikov-De Haas Oscillations in HgSe","authors":"G. Hein","doi":"10.1002/PSSB.2221270122","DOIUrl":"https://doi.org/10.1002/PSSB.2221270122","url":null,"abstract":"For the description of beating effects and of the angular dependence of Shubnikov-De Haas oscillations (SDH) of the narrow-gap semiconductor HgSe, a method is developed which can be used to estimate parameters from measurements of the transverse SDH effect. Also the influence of quadratic terms in the energy versus magnetic induction relation of the Landau levels can be studied. \u0000 \u0000 \u0000 \u0000Zur Beschreibung von Schwebungseffekten und der Winkelabhangigkeit von Shubnikov-De Haas-Oszillationen (SDH) des Zero-Gap-Halbleiters HgSe wird eine Methode entwickelt, die es gestattet, auf Messungen des transversalen SDH-Effektes ein Parameterschatzverfahren anzu-wenden. Ebenso kann der Einflus von quadratischen Termen in der Abhangigkeit der Energie von der magnetischen Induktion der Landauniveaus untersucht werden.","PeriodicalId":11087,"journal":{"name":"Day 1 Tue, January 11, 2022","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1985-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74184261","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 : 1985-12-31DOI: 10.1515/9783112494844-060
P. Enders
{"title":"Test of Two Relations between Tight-Binding Parameters for Tetrahedral Solids","authors":"P. Enders","doi":"10.1515/9783112494844-060","DOIUrl":"https://doi.org/10.1515/9783112494844-060","url":null,"abstract":"","PeriodicalId":11087,"journal":{"name":"Day 1 Tue, January 11, 2022","volume":"61 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1985-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82604610","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 : 1985-12-31DOI: 10.1515/9783112494844-048
A. Bhattacharya, A. Ghosal, D. Chattopadhyay
{"title":"Small-Signal AC Response of Two-Dimensional Hot Electrons in Quantum-Well Structures of Polar Semiconductors","authors":"A. Bhattacharya, A. Ghosal, D. Chattopadhyay","doi":"10.1515/9783112494844-048","DOIUrl":"https://doi.org/10.1515/9783112494844-048","url":null,"abstract":"","PeriodicalId":11087,"journal":{"name":"Day 1 Tue, January 11, 2022","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1985-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90458491","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 : 1985-12-31DOI: 10.1515/9783112494844-045
J. Šlechta
{"title":"On SCCF Theory of Falicov-Ramirez-Kimball Transitions in ID Binary Alloys","authors":"J. Šlechta","doi":"10.1515/9783112494844-045","DOIUrl":"https://doi.org/10.1515/9783112494844-045","url":null,"abstract":"","PeriodicalId":11087,"journal":{"name":"Day 1 Tue, January 11, 2022","volume":"96 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1985-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78034510","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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