Renormalization group approach for the scattering off a single Rashba impurity in a helical liquid
作者： François Crépin , Jan Carl Budich , Fabrizio Dolcini , Patrik Recher , Björn Trauzettel
DOI: 10.1103/PHYSREVB.86.121106
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摘要: The occurrence of two-particle inelastic backscattering has been conjectured in helical edge states topological insulators and is expected to alter transport. Here, by using a renormalization group approach, we provide microscopic derivation this process, the presence time-reversal invariant Rashba impurity potential. We are able prove that such an effect only occurs electron-electron interactions. Furthermore, find linear conductance as function temperature exhibits crossover between two scaling behaviors, T^4K for K>1/2 T^(8K−2) K<1/2, with K Luttinger parameter
harvard.edu
arxiv.org
128.84.21.199参考文章(25)
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