Dispersive estimates for massive Dirac operators in dimension two
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Differential Equations"
DOI: 10.1016/j.jde.2018.01.019
Abstract: Abstract We study the massive two dimensional Dirac operator with an electric potential. In particular, we show that the t − 1 decay rate holds in the L 1 → L ∞ setting if the… read more here.
Keywords: dispersive estimates; threshold energies; dirac operators; estimates massive ... See more keywords
Magneto-optical Kerr effect in spin split two-dimensional massive Dirac materials
Sign Up to like & getrecommendations! Published in 2020 at "2D Materials"
DOI: 10.1088/2053-1583/ab6781
Abstract: Two-dimensional (2D) massive Dirac electrons possess a finite Berry curvature, with Chern number $\pm 1/2$, that entails both a quantized dc Hall response and a subgap full-quarter Kerr rotation. The observation of these effects in… read more here.
Keywords: magneto optical; massive dirac; two dimensional; dimensional massive ... See more keywords
Quantum diffusion of massive Dirac fermions induced by symmetry breaking
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review B"
DOI: 10.1103/physrevb.104.075427
Abstract: We show that when a two-dimensional $(2\mathrm{D})$ Dirac fermion moves in disordered environments, the weak time-reversal symmetry breaking by a small mass gives rise to the diffusive wave propagation, i.e., that the wave-packet spread obeys… read more here.
Keywords: quantum diffusion; symmetry breaking; symmetry; massive dirac ... See more keywords
Helical symmetry breaking and quantum anomaly in massive Dirac fermions
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review B"
DOI: 10.1103/physrevb.104.l241111
Abstract: Helical symmetry of massive Dirac fermions is broken explicitly in the presence of electric and magnetic fields. Here we present two equations for the divergence of helical and axial vector currents following the Jackiw-Johnson approach… read more here.
Keywords: dirac fermions; helical symmetry; symmetry breaking; symmetry ... See more keywords
No bulk thermal currents in massive Dirac fermions
Sign Up to like & getrecommendations! Published in 2024 at "Physical Review B"
DOI: 10.1103/physrevb.110.l081404
Abstract: We calculate the energy current flowing in the bulk of a (2+1)-dimensional system of massive Dirac fermions and along a (1+1)-dimensional domain wall generated by flipping the sign of the particle mass. We show that,… read more here.
Keywords: massive dirac; bulk thermal; dirac fermions; thermal currents ... See more keywords
Raman tensor for two-dimensional massive Dirac fermions
Sign Up to like & getrecommendations! Published in 2024 at "Physical Review B"
DOI: 10.1103/physrevb.111.035446
Abstract: Raman spectroscopy is a valuable characterization tool for two-dimensional materials. Starting from model Hamiltonians for Chern insulators and magnetized monolayers of transition metal dichalcogenides, we theoretically predict two unconventional features of Raman spectroscopy. First, a… read more here.
Keywords: massive dirac; spectroscopy; two dimensional; raman tensor ... See more keywords
Quantized charge pump of massive Dirac electrons
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.95.205433
Abstract: We study a new scheme to realize a quantized two-parameter charge pump based on massive Dirac electrons. It is shown that the two time-dependent and out-of-phase staggered potentials introduced in graphene can pump out an… read more here.
Keywords: pump; charge; dirac electrons; massive dirac ... See more keywords
Slowly damped quasinormal modes of the massive Dirac field in d -dimensional Tangherlini spacetime
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review D"
DOI: 10.1103/physrevd.97.044020
Abstract: We consider quasinormal modes of the massive Dirac field in the background of a Schwarzschild- Tangherlini black hole. Different dimensions of the spacetime are considered, from d = 4 to d = 9. The quasinormal… read more here.
Keywords: quasinormal modes; dirac field; modes massive; massive dirac ... See more keywords