Optical evidence for non-Hermitian topological phases of two-dimensional Dirac fermions

2021 ◽  
Vol 104 (24) ◽  
Author(s):  
Peng Jiang ◽  
Way Wang ◽  
Jun-Feng Liu ◽  
Zhongshui Ma
Keyword(s):  
Topological Phases ◽  
Dirac Fermions ◽  
Two Dimensional ◽  
Optical Evidence

Designer Dirac fermions and topological phases in molecular graphene

Nature ◽  
2012 ◽  
Vol 483 (7389) ◽  
pp. 306-310 ◽  
Author(s):  
Kenjiro K. Gomes ◽  
Warren Mar ◽  
Wonhee Ko ◽  
Francisco Guinea ◽  
Hari C. Manoharan
Keyword(s):  
Topological Phases ◽  
Dirac Fermions

scholarly journals NONCOMMUTATIVE GRAPHENE

2013 ◽  
Vol 28 (16) ◽  
pp. 1350064 ◽  
Author(s):  
CATARINA BASTOS ◽  
ORFEU BERTOLAMI ◽  
NUNO COSTA DIAS ◽  
JOÃO NUNO PRATA
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Dirac Equation ◽  
Energy Levels ◽  
Dirac Fermions ◽  
Two Dimensional ◽  
Dirac System ◽  
Noncommutative Parameter

We consider a noncommutative description of graphene. This description consists of a Dirac equation for massless Dirac fermions plus noncommutative corrections, which are treated in the presence of an external magnetic field. We argue that, being a two-dimensional Dirac system, graphene is particularly interesting to test noncommutativity. We find that momentum noncommutativity affects the energy levels of graphene and we obtain a bound for the momentum noncommutative parameter.

scholarly journals Two-Dimensional Boron Hydride Sheets: High Stability, Massless Dirac Fermions, and Excellent Mechanical Properties

2016 ◽  
Vol 128 (35) ◽  
pp. 10448-10451 ◽  
Author(s):  
Yalong Jiao ◽  
Fengxian Ma ◽  
John Bell ◽  
Ante Bilic ◽  
Aijun Du
Keyword(s):  
Mechanical Properties ◽  
High Stability ◽  
Dirac Fermions ◽  
Two Dimensional ◽  
Boron Hydride

scholarly journals Edge theories of two-dimensional fermionic symmetry protected topological phases protected by unitary Abelian symmetries

2021 ◽  
Vol 104 (7) ◽  
Author(s):  
Shang-Qiang Ning ◽  
Chenjie Wang ◽  
Qing-Rui Wang ◽  
Zheng-Cheng Gu
Keyword(s):  
Topological Phases ◽  
Two Dimensional ◽  
Symmetry Protected

scholarly journals Itinerant quantum multicriticality of two-dimensional Dirac fermions

2018 ◽  
Vol 97 (20) ◽  
Author(s):  
Bitan Roy ◽  
Pallab Goswami ◽  
Vladimir Juričić
Keyword(s):  
Dirac Fermions ◽  
Two Dimensional

scholarly journals Two-dimensional Dirac fermions on oxidized black phosphorus

2019 ◽  
Vol 21 (43) ◽  
pp. 24206-24211
Author(s):  
Seoung-Hun Kang ◽  
Jejune Park ◽  
Sungjong Woo ◽  
Young-Kyun Kwon
Keyword(s):  
Density Functional Theory ◽  
Ab Initio ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
Black Phosphorus ◽  
Inversion Symmetry ◽  
Dirac Fermions ◽  
Two Dimensional ◽  
Functional Theory

Using ab initio density functional theory calculations, we find four-fold degenerate Dirac points protected by two nonsymmorphic symmetries in phosphorene oxide with the inversion symmetry broken.

scholarly journals Bulk pumping in two-dimensional topological phases

2019 ◽  
Vol 99 (3) ◽  
Author(s):  
Charles-Edouard Bardyn ◽  
Michele Filippone ◽  
Thierry Giamarchi
Keyword(s):  
Topological Phases ◽  
Two Dimensional

scholarly journals Realization of Symmetry-Enforced Two-Dimensional Dirac Fermions in Nonsymmorphic α-Bismuthene

ACS Nano ◽  
2020 ◽  
Vol 14 (2) ◽  
pp. 1888-1894 ◽  
Author(s):  
Pawel J. Kowalczyk ◽  
Simon A. Brown ◽  
Tobias Maerkl ◽  
Qiangsheng Lu ◽  
Ching-Kai Chiu ◽  
...  
Keyword(s):  
Dirac Fermions ◽  
Two Dimensional
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