Pumped spin-current and shot noise spectra in a single quantum dot
Abstract
We exploit the pumped spin-current and current noise spectra under equilibrium condition in a single quantum dot connected to two normal leads, as an electrical scheme for detection of the electron spin resonance (ESR) and decoherence. We propose spin-resolved quantum rate equations with correlation functions in Laplace-space for the analytical derivation of the zero-frequency atuo- and cross-shot noise spectra of charge- and spin-current. Our results show that in the strong Coulomb blockade regime, ESR-induced spin flip generates a finite spin-current and the quantum partition noises in the absence of net charge transport. Moreover, spin shot noise is closely related to the magnetic Rabi frequency and decoherence and would be a sensitive tool to measure them.
Cite
@article{arxiv.cond-mat/0404064,
title = {Pumped spin-current and shot noise spectra in a single quantum dot},
author = {Bing Dong and H. L. Cui and X. L. Lei},
journal= {arXiv preprint arXiv:cond-mat/0404064},
year = {2009}
}
Comments
4 pages, 3 figures, to be published in Phys. Rev. Letter