Generally high spin-orbit interaction dephase the spin in materials. then how topological insulators with lage spin orbit interaction can show large spin polarization?
please explain
thank you!
Spin-orbit interaction is a relativistic effect, generally weak in light atoms and systems composed of light atoms. Consult, for instance, the book Advanced Quantum Mechanics, 3rd edition, by F Schwabl (Springer, Berlin, 2005). See in particular Sec. 9.1 of this book, dealing with the Foldy–Wouthuysen transformation of the Dirac equation.
Shalu, in addition look for the the difference of spin orbit coupling encountered in atoms and the Rashba (spin orbit) coupling at surfaces. Maybe the answer in the linked thread may provide some further help.
https://www.researchgate.net/post/Can_anyone_explain_spin-momentum_locking_in_3D_topological_insulator
- Badges
- Science topic
- Similar topics
- Physics
- Condensed Matter Physics