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pro vyhledávání: '"Tan, Chao-Yang"'
Magnetism and topology are two major areas of condensed matter physics. The combination of magnetism and topology gives rise to more novel physical effects, which have attracted strongly theoretical and experimental attention. Recently, the concept o
Externí odkaz:
http://arxiv.org/abs/2406.16603
Publikováno v:
Phys. Rev. B 108, 195427 (2023)
Within linear response theory, the absorptive part of highly anisotropic optical conductivities are analytically calculated for distinct tilts in two-dimensional (2D) tilted semi-Dirac bands (SDBs). The transverse optical conductivities always vanish
Externí odkaz:
http://arxiv.org/abs/2303.18155
Autor:
Yan, Chang-Xu, Zhang, Furu, Tan, Chao-Yang, Chang, Hao-Ran, Zhou, Jianhui, Yao, Yugui, Guo, Hong
The over-tilting of type-II Dirac cones has led to various fascinating quantum phenomena. Here we find two anomalous acoustic plasmons (AAPs) are dictated by the distinct geometry of two-dimensional (2D) type-II Dirac cones, far beyond the convention
Externí odkaz:
http://arxiv.org/abs/2211.11266
Autor:
Hou, Jian-Tong, Yan, Chang-Xu, Tan, Chao-Yang, Li, Zhi-Qiang, Wang, Peng, Guo, Hong, Chang, Hao-Ran
Publikováno v:
Phys. Rev. B 108, 035407 (2023)
We report a unified theory based on linear response, for analyzing the longitudinal optical conductivity (LOC) of materials with tilted Dirac cones. Depending on the tilt parameter $t$, the Dirac electrons have four phases: untilted, type-I, type-II,
Externí odkaz:
http://arxiv.org/abs/2210.10410
Publikováno v:
Phys. Rev. B 106, 165404 (2022)
Lifshitz transition is a kind of topological phase transition in which the Fermi surface is reconstructed. It can occur in the two-dimensional (2D) tilted Dirac materials when the energy bands change between the type-I phase ($0
Externí odkaz:
http://arxiv.org/abs/2112.09392
Publikováno v:
Phys. Rev. B 103, 125425 (2021)
1T$^\prime$-MoS$_2$ exhibits valley-spin-polarized tilted Dirac bands in the presence of external vertical electric field and undergoes a topological phase transition between the topological insulator and band insulator around the critical value of t
Externí odkaz:
http://arxiv.org/abs/2012.11885
Akademický článek
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Within linear response theory, the absorptive part of optical conductivities are analytically calculated for distinct tilts in two-dimensional (2D) tilted semi-Dirac bands (TSDBs). The transverse optical conductivities always vanish $\mathrm{Re}\sigm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4381496a62721969a069f2244ca1c305
Akademický článek
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Autor:
Hou, Jian-Tong, Yan, Chang-Xu, Tan, Chao-Yang, Li, Zhi-Qiang, Wang, Peng, Guo, Hong, Chang, Hao-Ran
We report a unified theory based on linear response, for analyzing the longitudinal optical conductivity (LOC) of materials with tilted Dirac cones. Depending on the tilt parameter $t$, the Dirac electrons have four phases, untilted, type-I, type-II,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::811a69bfd77d563597af4cd840f2dd19
http://arxiv.org/abs/2210.10410
http://arxiv.org/abs/2210.10410