Seminar on Disorder and Strong Electron Correlations: "Localization at the Edge of 2D Topological Insulator by Kondo Impurities with Random Anisotropies"
Starts 1 Aug 2013 12:30
Ends 1 Aug 2013 20:00
Central European Time
Leonardo da Vinci Building Luigi Stasi Seminar Room
Strada Costiera, 11
I - 34151 Trieste (Italy)
We consider chiral electrons moving along the 1D helical edge of a 2D topological insulator and interacting with a disordered chain of Kondo impurities. Assuming the electron-spin couplings of random anisotropies, we map this system to the problem of the pinning of the charge density wave by the disordered potential. This mapping proves that arbitrary weak anisotropic disorder in coupling of chiral electrons with spin impurities leads to the Anderson localization of the helical edge states .
 B.L. Altshuler, I.L. Aleiner, and V.I. Yudson, preprint arXiv: 1306.2626
M. de Comelli
ICTP - Strada Costiera, 11
I - 34151 Trieste Italy (+39) 040 2240 111 email@example.com