Abstract
Spin-orbit interaction parameter (α) can be obtained by measuring the Shubnikov-de Haas oscillation, but this method is valid at only very low temperature. The current induced spin polarization in a 2-D electron gas layer is measured by potentiometric geometry which measures spin dependent chemical potential shifts. Subsequently, a spin-orbit interaction parameter can be extracted up to T = 250 K. In an inverted In0.52Al 0.48As/In0.53Ga0.47As/In0.52Al 0.48As quantum well system, α of 5.65 × 10-12 eVm and 3.85 × 10-12 eVm are obtained at T = 1.8 and 250 K, respectively.
Original language | English |
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Article number | 5467584 |
Pages (from-to) | 1562-1564 |
Number of pages | 3 |
Journal | IEEE Transactions on Magnetics |
Volume | 46 |
Issue number | 6 |
DOIs | |
Publication status | Published - 2010 Jun |
Bibliographical note
Funding Information:This work was supported by the KIST Institutional Program and the KRCF DRC Program.
Keywords
- 2-D electron gas (2DEG)
- Potentiometric measurement
- Rashba effect
- Spin-orbit interaction
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering