Pub Date : 2023-09-06DOI: 10.1088/1674-1056/acf703
Jinzhou Liu, Xinying Yan, Meng Jin, Xiangpeng Xin
This article presents the construction of a nonlocal Hirota equation with variable coefficient and its Darboux transformation. Using zero-seed solutions, 1-soliton and 2-soliton solutions of the equation are constructed through the Darboux transformation, along with the expression for N-soliton solutions. The influence of coefficient functions on the solutions is investigated by choosing different coefficient functions, and the dynamics of the solutions are analyzed. For the first time, this article utilizes the Lax pair to construct infinite conservation laws and extends it to nonlocal equations. The study of infinite conservation laws for nonlocal equations holds significant implications for the integrability of nonlocal equations.
{"title":"Darboux transformation, Infinite conservation laws and Exact solutions for nonlocal Hirota equation with variable coefficient","authors":"Jinzhou Liu, Xinying Yan, Meng Jin, Xiangpeng Xin","doi":"10.1088/1674-1056/acf703","DOIUrl":"https://doi.org/10.1088/1674-1056/acf703","url":null,"abstract":"\u0000 This article presents the construction of a nonlocal Hirota equation with variable coefficient and its Darboux transformation. Using zero-seed solutions, 1-soliton and 2-soliton solutions of the equation are constructed through the Darboux transformation, along with the expression for N-soliton solutions. The influence of coefficient functions on the solutions is investigated by choosing different coefficient functions, and the dynamics of the solutions are analyzed. For the first time, this article utilizes the Lax pair to construct infinite conservation laws and extends it to nonlocal equations. The study of infinite conservation laws for nonlocal equations holds significant implications for the integrability of nonlocal equations.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45888200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-06DOI: 10.1088/1674-1056/acf705
Yong Nie, Zheng Chen, Wensen Wei, Huijie Li, Yong Zhang, Ming Mei, Yuanyuan Wang, Wenhai Song, Dongsheng Song, Zhaosheng Wang, Xiang Zhu, W. Ning, Mingliang Tian
Here we report a systematic study on layered metal SrCu4-x P2 single crystals combined with transport, magnetization, thermodynamic measurements and structural characterization. We found the crystals show large linear magnetoresistance without any sign of saturation with magnetic field up to the 30 T. We also observed a phase transition with significant anomaly in resistivity and heat capacity at Tp ~ 140 K. Thermal expansion measurement reveals a subtle lattice parameters variation near Tp , i.e. ΔLc /Lc ~ 0.062%. The structural characterization proves that there is no structure transition below and above Tp . All these results suggest that the nonmagnetic transition SrCu4-x P2 should be associated with structural distortion.
{"title":"Linear magnetoresistance and structural distortion in layered SrCu4-x\u0000 P2 single crystals","authors":"Yong Nie, Zheng Chen, Wensen Wei, Huijie Li, Yong Zhang, Ming Mei, Yuanyuan Wang, Wenhai Song, Dongsheng Song, Zhaosheng Wang, Xiang Zhu, W. Ning, Mingliang Tian","doi":"10.1088/1674-1056/acf705","DOIUrl":"https://doi.org/10.1088/1674-1056/acf705","url":null,"abstract":"\u0000 Here we report a systematic study on layered metal SrCu4-x\u0000 P2 single crystals combined with transport, magnetization, thermodynamic measurements and structural characterization. We found the crystals show large linear magnetoresistance without any sign of saturation with magnetic field up to the 30 T. We also observed a phase transition with significant anomaly in resistivity and heat capacity at Tp\u0000 ~ 140 K. Thermal expansion measurement reveals a subtle lattice parameters variation near Tp\u0000 , i.e. ΔLc\u0000 /Lc\u0000 ~ 0.062%. The structural characterization proves that there is no structure transition below and above Tp\u0000 . All these results suggest that the nonmagnetic transition SrCu4-x\u0000 P2 should be associated with structural distortion.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46192343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-06DOI: 10.1088/1674-1056/acf704
Yang Zeng, Bingchen Che, Dan Sun, Ce Zhang, Guangyin Jing
Efficient cell migration is crucial for the functioning of biological processes, e.g., morphogenesis, wound healing, and cancer metastasis. In this study, we monitored the migratory behavior of 3D fibroblast clusters using live cell microscopy, and found that crowded environment affects cell migration, i.e., crowding leads to directional migration at the cluster's periphery. The number of cell layers being stacked during seeding determines the directional-to-random transition. Intriguingly, the migratory behavior of cell clusters resembles the dispersion dynamics of clouds of passive particles, indicating that the biological process is driven by physical effects (e.g., entropy) rather than cell communication. Our findings highlight the role of intrinsic physical characteristics, such as crowding, in regulating biological behavior, and suggest new therapeutic approaches targeting at cancer metastasis.
{"title":"Directional-to-Random Transition of Cell Cluster Migration","authors":"Yang Zeng, Bingchen Che, Dan Sun, Ce Zhang, Guangyin Jing","doi":"10.1088/1674-1056/acf704","DOIUrl":"https://doi.org/10.1088/1674-1056/acf704","url":null,"abstract":"\u0000 Efficient cell migration is crucial for the functioning of biological processes, e.g., morphogenesis, wound healing, and cancer metastasis. In this study, we monitored the migratory behavior of 3D fibroblast clusters using live cell microscopy, and found that crowded environment affects cell migration, i.e., crowding leads to directional migration at the cluster's periphery. The number of cell layers being stacked during seeding determines the directional-to-random transition. Intriguingly, the migratory behavior of cell clusters resembles the dispersion dynamics of clouds of passive particles, indicating that the biological process is driven by physical effects (e.g., entropy) rather than cell communication. Our findings highlight the role of intrinsic physical characteristics, such as crowding, in regulating biological behavior, and suggest new therapeutic approaches targeting at cancer metastasis.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48800460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-06DOI: 10.1088/1674-1056/acf706
Feng Yuan, Behzad Ghanbari, Yongshuai Zhang, Abdul Majid Wazwaz
Periodic solutions of the Zakharov equation are investigated in this paper. Through performing the limit operation $lambda_{2l-1}tolambda_1$ on the eigenvalues of the Lax pair obtained from the $n$-fold Darboux transformation, an order-$n$ breather-positon solution is first obtained from a plane wave seed. It is then proven that an order-$n$ lump solution can be further constructed through taking the limit $lambda_1tolambda_0$ on the breather-positon solution, because the unique eigenvalue $lambda_0$ associated with the Lax pair eigenfunction $Psi(lambda_0)=0$ corresponds to the limit of the infinite-periodic solutions. A convenient procedure of generating higher-order lump solutions of the Zakharov equation is also investigated based on the idea of the degeneration of double eigenvalues in multi-breather solutions.
{"title":"From breather solutions to lump solutions: A construction method for the Zakharov equation","authors":"Feng Yuan, Behzad Ghanbari, Yongshuai Zhang, Abdul Majid Wazwaz","doi":"10.1088/1674-1056/acf706","DOIUrl":"https://doi.org/10.1088/1674-1056/acf706","url":null,"abstract":"Periodic solutions of the Zakharov equation are investigated in this paper. Through performing the limit operation $lambda_{2l-1}tolambda_1$ on the eigenvalues of the Lax pair obtained from the $n$-fold Darboux transformation, an order-$n$ breather-positon solution is first obtained from a plane wave seed. It is then proven that an order-$n$ lump solution can be further constructed through taking the limit $lambda_1tolambda_0$ on the breather-positon solution, because the unique eigenvalue $lambda_0$ associated with the Lax pair eigenfunction $Psi(lambda_0)=0$ corresponds to the limit of the infinite-periodic solutions. A convenient procedure of generating higher-order lump solutions of the Zakharov equation is also investigated based on the idea of the degeneration of double eigenvalues in multi-breather solutions.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47737791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-06DOI: 10.1088/1674-1056/acf702
Jiaqi Li, Jianlei Zhang, Qun Liu
We propose a computing model in which the individual can automatically adjust the interaction intensity with his mentor according to the learning effect to investigate the cooperative dynamics of spatial prisoner’s dilemma. More specifically, when the cumulative payoff of a learner is more than his reference earning, he will strengthen the interaction with his mentor; otherwise, he will reduce that. The experimental results indicate that this mechanism can improve the emergence of cooperation in networked population, and the driving coefficient of interaction intensity plays an important role in promoting cooperation. Interestingly, under a certain social dilemma condition, there exists the smallest driving coefficient, resulting in optimal cooperation due to the positive feedback effect between the individual’s satisfaction frequency and the number of the effective neighbor. Moreover, we find the experimental results in accord with the ones of theoretical prediction obtained from an extended of the classical pair-approximation. These conclusions obtained by considering the relationship with mentor can provide a new perspective for further study on the dynamics of evolutionary game in structured population.
{"title":"Adaptive interaction driven by learning effect in spatial prisoner’s dilemma","authors":"Jiaqi Li, Jianlei Zhang, Qun Liu","doi":"10.1088/1674-1056/acf702","DOIUrl":"https://doi.org/10.1088/1674-1056/acf702","url":null,"abstract":"\u0000 We propose a computing model in which the individual can automatically adjust the interaction intensity with his mentor according to the learning effect to investigate the cooperative dynamics of spatial prisoner’s dilemma. More specifically, when the cumulative payoff of a learner is more than his reference earning, he will strengthen the interaction with his mentor; otherwise, he will reduce that. The experimental results indicate that this mechanism can improve the emergence of cooperation in networked population, and the driving coefficient of interaction intensity plays an important role in promoting cooperation. Interestingly, under a certain social dilemma condition, there exists the smallest driving coefficient, resulting in optimal cooperation due to the positive feedback effect between the individual’s satisfaction frequency and the number of the effective neighbor. Moreover, we find the experimental results in accord with the ones of theoretical prediction obtained from an extended of the classical pair-approximation. These conclusions obtained by considering the relationship with mentor can provide a new perspective for further study on the dynamics of evolutionary game in structured population.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42816820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The kagome superconductor CsV3Sb5 with exotic electronic properties has attracted substantial research interest, and the interplay between the superconductivity and the charge-density wave is crucial for understanding its unusual electronic ground state. In this work, we performed resistivity and AC magnetic susceptibility measurements on CsV3Sb5 single crystals uniaxially-strained along [100] and [110] directions. We find that the uniaxial-strain tuning effect of T c (dT c/dε) and TCDW (dT CDW/dε) are almost identical along these distinct high-symmetry directions. These findings suggest the in-plane uniaxial-strain-tuning of T c and T CDW in CsV3Sb5 are dominated by associated c-axis strain, whereas the response to purely in-plane strains is likely small.
{"title":"In-plane uniaxial-strain tuning of superconductivity and charge-density wave in CsV3Sb5","authors":"Xiaoran Yang, Qi Tang, Qiuyun Zhou, Huaiping Wang, Yi Li, Xue Fu, Jiawen Zhang, Yu Song, Huiqiu Yuan, Pengcheng Dai, Xingye Lu","doi":"10.1088/1674-1056/acf707","DOIUrl":"https://doi.org/10.1088/1674-1056/acf707","url":null,"abstract":"\u0000 The kagome superconductor CsV3Sb5 with exotic electronic properties has attracted substantial research interest, and the interplay between the superconductivity and the charge-density wave is crucial for understanding its unusual electronic ground state. In this work, we performed resistivity and AC magnetic susceptibility measurements on CsV3Sb5 single crystals uniaxially-strained along [100] and [110] directions. We find that the uniaxial-strain tuning effect of T\u0000 c (dT\u0000 c/dε) and TCDW (dT\u0000 CDW/dε) are almost identical along these distinct high-symmetry directions. These findings suggest the in-plane uniaxial-strain-tuning of T\u0000 c and T\u0000 CDW in CsV3Sb5 are dominated by associated c-axis strain, whereas the response to purely in-plane strains is likely small.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43236371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-04DOI: 10.1088/1674-1056/acf65f
P. Li, Bang Liu, Wei-Xi Zhang, Zhi-Xin Guo
The electron’s charge and spin degrees of freedom are at the core of modern electronic devices. With the in-depth investigation of two-dimensional materials, another degree of freedom, valley, has also attracted tremendous research interest. The intrinsic spontaneous valley polarization in two-dimensional magnetic systems, ferrovalley material, provides convenience for detecting and modulating the valley. In this review, we first introduce the development of valleytronics. Then, the valley polarization forms by the p, d, and f-orbit that are discussed. Following, we discuss the investigation progress of modulating the valley polarization of two-dimensional ferrovalley materials by multiple physical fields, such as electric, stacking mode, strain, and interface. Finally, we look forward to the future developments of valleytronics.
{"title":"Progress on two-dimensional ferrovalley materials","authors":"P. Li, Bang Liu, Wei-Xi Zhang, Zhi-Xin Guo","doi":"10.1088/1674-1056/acf65f","DOIUrl":"https://doi.org/10.1088/1674-1056/acf65f","url":null,"abstract":"\u0000 The electron’s charge and spin degrees of freedom are at the core of modern electronic devices. With the in-depth investigation of two-dimensional materials, another degree of freedom, valley, has also attracted tremendous research interest. The intrinsic spontaneous valley polarization in two-dimensional magnetic systems, ferrovalley material, provides convenience for detecting and modulating the valley. In this review, we first introduce the development of valleytronics. Then, the valley polarization forms by the p, d, and f-orbit that are discussed. Following, we discuss the investigation progress of modulating the valley polarization of two-dimensional ferrovalley materials by multiple physical fields, such as electric, stacking mode, strain, and interface. Finally, we look forward to the future developments of valleytronics.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44661054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-04DOI: 10.1088/1674-1056/acf662
Hao-Zhen Li, Ran Zeng, Miao Hu, Meng-meng Xu, Xue-Fang Zhou, Xiu-wen Xia, Jing-Ping Xu, Ya-Ping Yang
The dynamic control of single-photon scattering in a pair of one-dimensional waveguides mediated by a time-modulated atom-cavity system is investigated. Two cases, where the waveguides are coupled symmetrically or asymmetrically to the atom-cavity system, are discussed in detail. The results show that such time-modulated atom-cavity configuration can behave as a dynamical tunable directional single-photon router. The photons with different frequencies can dynamically be routed from the incident waveguide into any ports of the other with a 100% probability via adjusting the modulated amplitude or phases of the time-modulated atom-cavity coupling strengths, associate with the help of the asymmetrical waveguide-cavity couplings. Furthermore, the influence of dissipation on the routing capability is investigated. It is shown that the present single-photon router is robust against the dissipative process of the system, especially the atomic dissipation. These results are expected to be applicable in quantum information processing and design quantum devices with dynamical modulation.
{"title":"Dynamic modulated single-photon routing","authors":"Hao-Zhen Li, Ran Zeng, Miao Hu, Meng-meng Xu, Xue-Fang Zhou, Xiu-wen Xia, Jing-Ping Xu, Ya-Ping Yang","doi":"10.1088/1674-1056/acf662","DOIUrl":"https://doi.org/10.1088/1674-1056/acf662","url":null,"abstract":"\u0000 The dynamic control of single-photon scattering in a pair of one-dimensional waveguides mediated by a time-modulated atom-cavity system is investigated. Two cases, where the waveguides are coupled symmetrically or asymmetrically to the atom-cavity system, are discussed in detail. The results show that such time-modulated atom-cavity configuration can behave as a dynamical tunable directional single-photon router. The photons with different frequencies can dynamically be routed from the incident waveguide into any ports of the other with a 100% probability via adjusting the modulated amplitude or phases of the time-modulated atom-cavity coupling strengths, associate with the help of the asymmetrical waveguide-cavity couplings. Furthermore, the influence of dissipation on the routing capability is investigated. It is shown that the present single-photon router is robust against the dissipative process of the system, especially the atomic dissipation. These results are expected to be applicable in quantum information processing and design quantum devices with dynamical modulation.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43112411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-04DOI: 10.1088/1674-1056/acf660
Chao-Bo Luo, Wen-Chao Liu, Xiang-Yang Peng
As opposed to the prototypical MoS2 with centroasymmetry, Janus ferrovalley materials such as H-VSSe is less symmetric with the mirror symmetry and time reversal symmetry broken, and hence possess spontaneous valley polarization and strong ferroelasticity. The optical transition is an important means to excite the valley carriers. We investigated the optical spectrum of H-VSSe by using the many-body perturbation-based GW approach and solving the Bethe-Salpeter equation (BSE) to include the electron-hole interactions. It is found that after the GW correction, the band gaps of the quasiparticle bands are much larger than those obtained by the normal density functional theory. The system is ferromagnetic and the valley gaps become non-degenerate due to spin-orbit coupling (SOC). The position of the lowest BSE peak is much lower than the quasiparticle band gap, indicative of a large excitonic effect. The peak is split into two peaks by the SOC. The binding energy difference between these two BSE peaks is about the same as the difference between the inequivalent valley gaps. Our results show that in Janus H-VSSe the two lowest exciton peaks are from the two inequivalent valleys with different gaps, in contrast to the A and B exciton peaks of MoS2 which are from the same valley.
{"title":"Optical spectrum of ferrovalley materials: a case study of Janus H-VSSe","authors":"Chao-Bo Luo, Wen-Chao Liu, Xiang-Yang Peng","doi":"10.1088/1674-1056/acf660","DOIUrl":"https://doi.org/10.1088/1674-1056/acf660","url":null,"abstract":"\u0000 As opposed to the prototypical MoS2 with centroasymmetry, Janus ferrovalley materials such as H-VSSe is less symmetric with the mirror symmetry and time reversal symmetry broken, and hence possess spontaneous valley polarization and strong ferroelasticity. The optical transition is an important means to excite the valley carriers. We investigated the optical spectrum of H-VSSe by using the many-body perturbation-based GW approach and solving the Bethe-Salpeter equation (BSE) to include the electron-hole interactions. It is found that after the GW correction, the band gaps of the quasiparticle bands are much larger than those obtained by the normal density functional theory. The system is ferromagnetic and the valley gaps become non-degenerate due to spin-orbit coupling (SOC). The position of the lowest BSE peak is much lower than the quasiparticle band gap, indicative of a large excitonic effect. The peak is split into two peaks by the SOC. The binding energy difference between these two BSE peaks is about the same as the difference between the inequivalent valley gaps. Our results show that in Janus H-VSSe the two lowest exciton peaks are from the two inequivalent valleys with different gaps, in contrast to the A and B exciton peaks of MoS2 which are from the same valley.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42382294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-04DOI: 10.1088/1674-1056/acf661
Xiaowei Jiang, Bin Fang, Chunlian Zhan
Quasi-bound state in the continuum (QBIC) resonance is gradually attracting attention and being applied in Goos-Hänchen (GH) shift enhancement due to its high quality (Q) factor and superior optical confinement. Currently, symmetry-protected QBIC resonance is often achieved by breaking the geometric symmetry, but few cases are achieved by breaking the material symmetry. This paper proposes a dielectric compound grating to achieve a high Q factor and high reflection symmetry-protected QBIC resonance based on material asymmetry. Theoretical calculations show that the symmetry-protected QBIC resonance achieved by material asymmetry can significantly increase the GH shift up to -980 times the resonance wavelength, and the maximum GH shift is located at the reflection peak with unity reflectance. This paper provides a theoretical basis for designing and fabricating high-performance GH shift tunable metasurfaces/dielectric gratings in the future.
{"title":"Enhancing the Goos-Hänchen shift based on quasi-bound states in the continuum through material asymmetric dielectric compound gratings","authors":"Xiaowei Jiang, Bin Fang, Chunlian Zhan","doi":"10.1088/1674-1056/acf661","DOIUrl":"https://doi.org/10.1088/1674-1056/acf661","url":null,"abstract":"\u0000 Quasi-bound state in the continuum (QBIC) resonance is gradually attracting attention and being applied in Goos-Hänchen (GH) shift enhancement due to its high quality (Q) factor and superior optical confinement. Currently, symmetry-protected QBIC resonance is often achieved by breaking the geometric symmetry, but few cases are achieved by breaking the material symmetry. This paper proposes a dielectric compound grating to achieve a high Q factor and high reflection symmetry-protected QBIC resonance based on material asymmetry. Theoretical calculations show that the symmetry-protected QBIC resonance achieved by material asymmetry can significantly increase the GH shift up to -980 times the resonance wavelength, and the maximum GH shift is located at the reflection peak with unity reflectance. This paper provides a theoretical basis for designing and fabricating high-performance GH shift tunable metasurfaces/dielectric gratings in the future.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42978113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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