Detection of single electron spin resonance in a double quantum dot

Details Detection of single electron spin resonance in a double quantum dot Detection of single electron spin resonance in a double quantum dot

2007-04-12

arxiv.org/abs/0704.1628v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 5 figures. To be published in Journal of Applied Physics, proceedings ICPS 2006

Scientific paper

10.1063/1.2722734

Spin-dependent transport measurements through a double quantum dot are a valuable tool for detecting both the coherent evolution of the spin state of a single electron as well as the hybridization of two-electron spin states. In this paper, we discuss a model that describes the transport cycle in this regime, including the effects of an oscillating magnetic field (causing electron spin resonance) and the effective nuclear fields on the spin states in the two dots. We numerically calculate the current flow due to the induced spin flips via electron spin resonance and we study the detector efficiency for a range of parameters. The experimental data are compared with the model and we find a reasonable agreement.

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