| Issue |
EPL
Volume 79, Number 1, July 2007
|
|
|---|---|---|
| Article Number | 10004 | |
| Number of page(s) | 5 | |
| Section | General | |
| DOI | https://doi.org/10.1209/0295-5075/79/10004 | |
| Published online | 14 June 2007 | |
Topological force and torque in spin-orbit coupling systems
1
Beijing National Laboratory for Condensed Matter Physics, Institute of Physics Chinese Academy of Sciences - Beijing 100080, China
2
School of Physics, Yunnan University - Kunming 650091, China
Received:
13
March
2007
Accepted:
22
May
2007
The topological force and torque are investigated in systems with spin-orbit coupling. It is demonstrated that the topological force and torque appears as a pure relativistic quantum effect in an electromagnetic field. The origin of both topological force and torque is the Zitterbewegung effect. Considering nonlinear behaviors of spin-orbit coupling, we address possible novel phenomena driven by the topological forces.
PACS: 03.65.Pm – Relativistic wave equations / 72.10.Bg – General formulation of transport theory / 71.70.Ej – Spin-orbit coupling, Zeeman and Stark splitting, Jahn-Teller effect
© Europhysics Letters Association, 2007
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