Reference : Point contacts and localization in generic helical liquids
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/10993/20080
Point contacts and localization in generic helical liquids
English
Orth, Christoph P. [> >]
Strübi, Grégory [> >]
Schmidt, Thomas mailto [University of Basel > Department of Physics]
2013
Phys. Rev. B
88
165315
Yes
[en] We consider two helical liquids on opposite edges of a two-dimensional topological insulator, which are connected by one or several local tunnel junctions. In the presence of spatially inhomogeneous Rashba spin-orbit coupling, the spin of the helical edge states is momentum dependent, and this spin texture can be different on opposite edges. We demonstrate that this has a strong impact on the electron transport between the edges. In particular, in the case of many random tunnel contacts, the localization length depends strongly on the spin textures of the edge states.
http://hdl.handle.net/10993/20080
10.1103/PhysRevB.88.165315
http://link.aps.org/doi/10.1103/PhysRevB.88.165315

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