Suppression of Spin Dephasing in a Two-Dimensional Electron Gas with a Quantum Point Contact
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- Title
- Suppression of Spin Dephasing in a Two-Dimensional Electron Gas with a Quantum Point Contact
- Authors
- Jeong, JS; Lee, HW
- Date Issued
- 2010-03
- Publisher
- KOREAN MAGNETICS SOC
- Abstract
- Spin-orbit coupling (SOC) 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
- spin-orbit coupling; quantum point contact; spin dephasing; FIELD-EFFECT TRANSISTOR; ORBIT INTERACTION; TRANSPORT; POLARIZATION; CONDUCTANCE; SPINTRONICS; RELAXATION; CHANNELS; NOISE; WELLS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/25414
- DOI
- 10.4283/JMAG.2010.15.1.7
- ISSN
- 1226-1750
- Article Type
- Article
- Citation
- JOURNAL OF MAGNETICS, vol. 15, no. 1, page. 7 - 11, 2010-03
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