Dephasing in strongly disordered interacting quantum wires

Spin-catalyzed hopping conductivity in disordered strongly interacting quantum wires

S. A. Parameswaran1,2 and S. Gopalakrishnan2,3,4 1Department of Physics and Astronomy, University of California, Irvine, California 92697, USA 2Kavli Institute for Theoretical Physics, University of California, Santa Barbara, California 93106, USA 3Department of Physics and Burke Institute, California Institute of Technology, Pasadena, California 91125, USA 4Department of Engineering Science an...

Spin dephasing in quantum wires

We study high-field spin transport in a quantum wire using a semiclassical approach. Spin dephasing (or spin depolarization) in the wire is caused by D’yakonov-Perel’ relaxation associated with bulk inversion asymmetry (Dresselhaus spin-orbit coupling) and structural inversion asymmetry (Rashba spin-orbit coupling). The depolarization rate is found to depend strongly on the initial polarization...

Exciton dephasing in ZnSe quantum wires

Quantum properties of a strongly interacting frustrated disordered magnet

We compute the low-energy quantum states and low-frequency dynamical susceptibility of a quantum generalization of the two-dimensional Edwards-Anderson spin glass, obtaining exact numerical results for system sizes much larger than previously accessible. The ground state is a complex superposition of a substantial fraction of all the classical ground states, often having large connected regions...

Interference as a probe of spin incoherence in strongly interacting quantum wires.

We show that interference experiments can be used to identify the spin-incoherent regime of strongly interacting one-dimensional conductors. Two qualitative signatures of spin incoherence are found: a strong magnetic field dependence of the interference contrast and an anomalous scaling of the interference contrast with the applied voltage, with a temperature and magnetic field dependent scalin...