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Spin and Charge transport
Topological insulators

Condensed Matter Physics

In a system with spin-orbit coupling (SOC), the spin and charge transport will couple to each other, which induces many remarkable phenomenon, such as "spin Hall effect" (or "inverse spin Hall effect"), "current induced spin polarization" and so on. However usually for the transport problem, the SOC is treated as a perturbation, which may fail in the extreme strong SOC case. Therefore it is natural to ask how these phenomenon look like in the strong SOC limit.


2011 · All
C. Liu, J. Budich, P. Recher and B. Trauzettel, "Charge-spin duality in non-equilibrium transport of helical liquids," Phys. Rev. B 83, 035407 (2011)
B. Buttner, C. Liu, G. Tkachov, A. Novik, C. Brune, H. Buhmann, E. M. Hankiewicz, P. Recher, B. Trauzettel, S. Zhang and L. Molenkamp, "Single valley Dirac fermions in zero-gap HgTe quantum wells," Nature Phys. 7, 418 (2011)
C. Liu : Spin and charge transport