Magnetic Impurity Affected by Spin-Orbit Coupling: Behavior near a Topological Phase Transition
Strongly Correlated Electrons
2013-08-09 v2
Abstract
We investigate the effect of spin-orbit coupling on the behavior of magnetic impurity at the edge of a zigzag graphene ribbon by means of quantum Monte Carlo simulations. A peculiar interplay of Kane-Mele type spin-orbit and impurity-host coupling is found to affect local properties such as the impurity magnetic moment and spectral densities. The special helical nature of the topological insulator on the edge is found to affect nonlocal quantities, such as the two-particle and spin-spin correlation functions linking electrons on the impurity with those in the conduction band.
Cite
@article{arxiv.1301.6501,
title = {Magnetic Impurity Affected by Spin-Orbit Coupling: Behavior near a Topological Phase Transition},
author = {F. M. Hu and T. O. Wehling and J. E. Gubernatis and Thomas Frauenheim and R. M. Nieminen},
journal= {arXiv preprint arXiv:1301.6501},
year = {2013}
}
Comments
12 figures. And a shorter version will be published in PRB