Highly robust anisotropic zero refraction effects in semi-Dirac photonic crystals
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DOI: 10.1038/s41598-025-13372-x
Abstract: The ultra-low-loss epsilon-and-mu-near-zero (EMNZ) waveguide based on photonic crystals (PCs) supports uniform field distributions at a single frequency, corresponding to a specific configuration of PCs’ structural and material parameters. However, its applications are limited by… read more here.
Keywords: photonic crystals; highly robust; zero refraction; refraction effects ... See more keywords
Spin-dependent transport through edge states in 2D semi-Dirac materials with Rashba spin-orbit coupling and band inversion
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DOI: 10.1088/2053-1583/ae0f28
Abstract: We investigate the bulk-boundary correspondence in two-dimensional type-I semi-Dirac materials with band inversion and Rashba spin–orbit coupling (SOC). Employing a dimensional reduction framework, we identify the Zak phase along the quadratically dispersing direction as a… read more here.
Keywords: edge; dirac materials; edge states; spin orbit ... See more keywords
Off-resonant light-induced topological phase transition and anomalous thermoelectric transport in semi-Dirac materials
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DOI: 10.1103/dyqm-xqbn
Abstract: We show that a semi-Dirac (SD) system with an inversion symmetry breaking mass exhibits a topological phase transition when irradiated with off-resonant light. Using Floquet theory, we derive the band structure, Chern numbers, phase diagram,… read more here.
Keywords: phase transition; kappa; semi dirac; topological phase ... See more keywords
Fermion dispersion renormalization in a two-dimensional semi-Dirac semimetal
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review B"
DOI: 10.1103/physrevb.105.085136
Abstract: We present a non-perturbative study of the quantum many-body effects caused by the long-range Coulomb interaction in a two-dimensional semi-Dirac semimetal. This kind of semimetal may be realized in deformed graphene and a class of… read more here.
Keywords: dispersion; fermion dispersion; semi dirac;
Driven conductance of an irradiated semi-Dirac material
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review B"
DOI: 10.1103/physrevb.98.235424
Abstract: We theoretically investigate the electronic and transport properties of a semi-Dirac material under the influence of an external time-dependent periodic driving field (irradiation) by means of Floquet theory. We explore the inelastic scattering mechanism between… read more here.
Keywords: dirac material; irradiation; conductance; irradiated semi ... See more keywords
Direction-dependent giant optical conductivity in two-dimensional semi-Dirac materials
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review B"
DOI: 10.1103/physrevb.99.075415
Abstract: We show that the gap parameter in semi-Dirac material induces a large degree of sensitivity for interband optical conductivity with respect to the polarization direction. The optical conductivity reveals an abruptly large value at a… read more here.
Keywords: direction; semi dirac; direction dependent; optical conductivity ... See more keywords
Optical properties of a semi-Dirac material
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review B"
DOI: 10.1103/physrevb.99.115406
Abstract: Within a Kubo formalism, we calculate the absorptive part of the dynamic longitudinal conductivity $\sigma(\Omega)$ of a 2D semi-Dirac material. In the clean limit, we provide separate analytic formulas for intraband (Drude) and interband contributions… read more here.
Keywords: dirac material; properties semi; energy; semi dirac ... See more keywords