Reference : Current Correlations in Quantum Spin Hall Insulators
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/10993/20090
Current Correlations in Quantum Spin Hall Insulators
English
Schmidt, Thomas mailto [Yale University > Department of Physics]
2011
Phys. Rev. Lett.
107
096602
Yes
[en] We consider a four-terminal setup of a two-dimensional topological insulator (quantum spin Hall insulator) with local tunneling between the upper and lower edges. The edge modes are modeled as helical Luttinger liquids and the electron-electron interactions are taken into account exactly. Using perturbation theory in the tunneling, we derive the cumulant generating function for the inter-edge current. We show that different possible transport channels give rise to different signatures in the current noise and current cross-correlations, which could be exploited in experiments to elucidate the interplay between electron-electron interactions and the helical nature of the edge states.
http://hdl.handle.net/10993/20090
10.1103/PhysRevLett.107.096602

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Limited access
schmidt11.pdfPublisher postprint216.02 kBRequest a copy

Bookmark and Share SFX Query

All documents in ORBilu are protected by a user license.