scholarly journals Spin-orbit scattering in quantum diffusion of massive Dirac fermions

2012 ◽  
Vol 86 (12) ◽  
Author(s):  
Wen-Yu Shan ◽  
Hai-Zhou Lu ◽  
Shun-Qing Shen
Keyword(s):  
Quantum Diffusion ◽  
Dirac Fermions ◽  
Spin Orbit

Dirac-fermions in graphene d-wave superconducting heterojunction with the spin orbit interaction

2017 ◽  
Vol 540 ◽  
pp. 48-53
Author(s):  
Juntao Wang ◽  
Andong Wang ◽  
Rui Zhang ◽  
Deng Sun ◽  
Yanling Yang
Keyword(s):  
Orbit Interaction ◽  
Dirac Fermions ◽  
Spin Orbit ◽  
Spin Orbit Interaction ◽  
D Wave

Magnetotransport of Dirac fermions in graphene in the presence of spin–orbit interactions

2008 ◽  
Vol 20 (34) ◽  
pp. 345228 ◽  
Author(s):  
Kai-He Ding ◽  
Guanghui Zhou ◽  
Zhen-Gang Zhu ◽  
Jamal Berakdar
Keyword(s):  
Dirac Fermions ◽  
Spin Orbit ◽  
Spin Orbit Interactions

scholarly journals Ultrafast reorientation of the Néel vector in antiferromagnetic Dirac semimetals

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Atsushi Ono ◽  
Sumio Ishihara
Keyword(s):  
Real Time ◽  
Ultrafast Dynamics ◽  
Dirac Fermions ◽  
Spin Orbit ◽  
Fundamental Physics ◽  
Time Dynamics ◽  
Time Symmetry ◽  
Optical Effects ◽  
Dirac Semimetals ◽  
A Current

AbstractAntiferromagnets exhibit distinctive characteristics such as ultrafast dynamics and robustness against perturbative fields, thereby attracting considerable interest in fundamental physics and technological applications. Recently, it was revealed that the Néel vector can be switched by a current-induced staggered (Néel) spin-orbit torque in antiferromagnets with the parity-time symmetry, and furthermore, a nonsymmorphic symmetry enables the control of Dirac fermions. However, the real-time dynamics of the magnetic and electronic structures remain largely unexplored. Here, we propose a theory of the ultrafast dynamics in antiferromagnetic Dirac semimetals and show that the Néel vector is rotated in the picosecond timescale by the terahertz-pulse-induced Néel spin-orbit torque and other torques originating from magnetic anisotropies. This reorientation accompanies the modulation of the mass of Dirac fermions and can be observed in real time by the magneto-optical effects. Our results provide a theoretical basis for emerging ultrafast antiferromagnetic spintronics combined with the topological aspects of materials.

ANYONS FROM DIRAC FERMIONS

1991 ◽  
Vol 06 (01) ◽  
pp. 45-54 ◽  
Author(s):  
T. H. HANSSON ◽  
M. SPORRE ◽  
J. M. LEINAAS
Keyword(s):  
Berry Phase ◽  
Qualitative Difference ◽  
Magnetic Interaction ◽  
Exchange Theory ◽  
Spin Orbit Coupling ◽  
Dirac Fermions ◽  
Spin Orbit ◽  
Thomas Precession ◽  
Relativistic Limit ◽  
Type Interaction

We show that interacting Dirac fermions in 2+1 dimensions behave as anyons in the non-relativistic limit. The reason is a spin-orbit coupling originating from both the magnetic μ · B-type interaction and the Thomas precession effect. We demonstrate this phenomenon by calculating and analyzing the Breit potential or QED and a scalar exchange theory to O(1/c2). We also show that there is a qualitative difference between the statistical phases arising from the magnetic interaction and from the Thomas precession, in that only the former can be detected as a Berry phase.

scholarly journals Quantum diffusion of massive Dirac fermions induced by symmetry breaking

2021 ◽  
Vol 104 (7) ◽  
Author(s):  
Ting Zhang ◽  
Chushun Tian ◽  
Ping Sheng
Keyword(s):  
Symmetry Breaking ◽  
Quantum Diffusion ◽  
Dirac Fermions
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