Topological Proximity-Induced Dirac Fermion in Two-Dimensional Antimonene

ACS Nano ◽  
2021 ◽  
Author(s):  
Shu Hsuan Su ◽  
Pei-Yu Chuang ◽  
Hsin-Yu Chen ◽  
Shih-Chang Weng ◽  
Wei-Chuan Chen ◽  
...  
Keyword(s):  
Dirac Fermion ◽  
Two Dimensional ◽  
Topological Proximity

scholarly journals Observation of Possible Nonlinear Anomalous Hall Effect in Organic Two-Dimensional Dirac Fermion System

2021 ◽  
Author(s):  
Andhika Kiswandhi ◽  
Toshihito Osada
Keyword(s):  
Hall Effect ◽  
Charge Order ◽  
Anomalous Hall Effect ◽  
Zero Magnetic Field ◽  
Dirac Fermion ◽  
Two Dimensional ◽  
Electronic Phase ◽  
Direction Dependence ◽  
Insulating Phase ◽  
Massless Dirac Fermion

Abstract We report the observation of nonlinear anomalous Hall effect (NLAHE) in the multilayered organic conductor α-(BEDT-TTF)2I3 in the charge order (CO) insulating phase just under the critical pressure for transition into two-dimensional (2D) massless Dirac fermion (DF) phase. We successfully extracted the finite nonlinear Hall voltage proportional to square current at zero magnetic field. The observed NLAHE features, current direction dependence and correlation with CO, are consistent with the previous estimation assuming 2D massive DF with a pair of tilted Dirac cones. This is the first observation of topological transport in organic conductors, and also the first example of NLAHE in the electronic phase with spontaneous symmetry breaking.

Two-dimensional honeycomb-kagome Ta2S3: a promising single-spin Dirac fermion and quantum anomalous hall insulator with half-metallic edge states

Nanoscale ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 5666-5673 ◽  
Author(s):  
Liang Zhang ◽  
Chang-wen Zhang ◽  
Shu-Feng Zhang ◽  
Wei-xiao Ji ◽  
Ping Li ◽  
...  
Keyword(s):  
Carrier Mobility ◽  
Magnetocrystalline Anisotropy ◽  
Dirac Fermion ◽  
High Curie Temperature ◽  
Two Dimensional ◽  
Edge States ◽  
Half Metallic ◽  
Single Spin ◽  
High Carrier Mobility ◽  
High Carrier

Recent experimental success in the realization of two-dimensional (2D) magnetism has invigorated the search for new 2D magnetic materials with a large magnetocrystalline anisotropy, high Curie temperature, and high carrier mobility.

Parity Anomaly of Two-Dimensional Dirac Fermion in a Magnetic Field

1993 ◽  
Vol 62 (5) ◽  
pp. 1812-1813 ◽  
Author(s):  
Osamu Narikiyo ◽  
Kazuhiro Kuboki
Keyword(s):  
Magnetic Field ◽  
Dirac Fermion ◽  
Two Dimensional
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