| |
 |
UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 18:11 |
 |
|
|
|
Conference: Bucharest University Faculty of Physics 2017 Meeting
Section: Polymer Physics
Title:
Non-Abelian electron wavepacket
Authors:
Tiberius O. CHECHE
Affiliation:
University of Bucharest, Faculty of Physics, Magurele, Bucharest, Romania
E-mail
tiberiuscheche@yahoo.com
Keywords:
non-Abelian gauge structure, anomalous spin Hall effect
Abstract:
In the cases where the energy bands are degenerate or nearly degenerate the Berry curvature becomes a matrix with non-Abelian gauge structure [1, 2]. The semiclassical theory that describes the non-degenerate energy bands needs to be requantized to turn the wavepacket energy into an effective quantum Hamiltonian. The anomalous spin Hall effect [3] is pedagogically discussed in this context.
References:
[1] Chang, M.-C., and Q. Niu, 2008, Journal of Physics: Condensed Matter 20, 193202, 2008.
[2] Xiao, D., Chang, M.-C., and Q. Niu, Rev. Mod. Phys. 82, 2010.
[3] Culcer, D., Y. Yao, and Q. Niu, Phys. Rev. B 72, 085110, 2005.
|
|
|
|