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arXiv · 1004.1006

Suppression of Spin Dephasing in a Two-Dimensional Electron Gas with a Quantum Point Contact

Jae-Seung Jeong·Hyun-Woo Lee
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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.

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Jae-Seung Jeong, Hyun-Woo Lee. 2010-04-09. Suppression of Spin Dephasing in a Two-Dimensional Electron Gas with a Quantum Point Contact. https://doi.org/10.4283/jmag.2010.15.1.007

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