Suppression of Spin Dephasing in a Two-Dimensional Electron Gas with a Quantum Point Contact
Mesoscale and Nanoscale Physics
2012-01-23 v2
Abstract
Spin-orbit coupling is a source of strong spin dephasing in two- and three-dimensional semiconducting systems. We report that spin dephasing in a two-dimensional electron gas can be suppressed by introducing a quantum point contact. Surprisingly, this suppression was not limited to the vicinity of the contact but extended to the entire two-dimensional electron gas. This facilitates the electrical control of the spin degree of freedom in a two-dimensional electron gas through spin-orbit coupling.
Keywords
Cite
@article{arxiv.1004.1006,
title = {Suppression of Spin Dephasing in a Two-Dimensional Electron Gas with a Quantum Point Contact},
author = {Jae-Seung Jeong and Hyun-Woo Lee},
journal= {arXiv preprint arXiv:1004.1006},
year = {2012}
}
Comments
9 pages, 4 figures