Spin relaxation via exchange with donor impurity-bound electrons

Spin relaxation via exchange with donor impurity-bound electrons

Lan Qing,1,2 Jing Li,2 Ian Appelbaum,2,* and Hanan Dery1,3 1Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627, USA 2Department of Physics, Center for Nanophysics and Advanced Materials, University of Maryland, College Park, Maryland 20742, USA 3Department of Electrical and Computer Engineering, University of Rochester, Rochester, New York 14627, USA (Receiv...

Spin relaxation of conduction electrons

Prospect of building electronic devices in which electron spins store and transport information has revived interest in the spin relaxation of conduction electrons. Since spin-polarized currents cannot flow indefinitely, basic spin-electronic devices must be smaller than the distance electrons diffuse without losing its spin memory. Some recent experimental and theoretical effort has been devot...

Spin Splitting of Donor-Bound Excitons in ZnO Due To Combined Stress and Spin Exchange

Impurity-Induced Bound States in Superconductors with Spin-Orbit Coupling.

We study the effect of strong spin-orbit coupling (SOC) on bound states induced by impurities in superconductors. The presence of SOC breaks the SU(2)-spin symmetry and causes the superconducting order parameter to have generically both singlet (s-wave) and triplet (p-wave) components. We find that in the presence of SOC the spectrum of Yu-Shiba-Rusinov (YSR) states is qualitatively different i...

Conduction electrons and the decoherence of impurity-bound electrons in a semiconductor

We study the dynamics of impurity-bound electrons interacting with a bath of conduction band electrons in a semiconductor. Only the exchange interaction is considered. We derive master equations for the density matrices of singleand two-qubit systems under the usual Born and Markov approximations. The bath mediated Ruderman-Kittel-Kasuya-Yoshida interaction in the two-qubit case arises naturall...