Observation of spin-orbit interaction parameter over a wide temperature range using potentiometric measurement

Youn Ho Park; Hyun Cheol Koo; Kyung Ho Kim; Hyung Jun Kim; Joonyeon Chang; Suk Hee Han; Hijung Kim

doi:10.1109/TMAG.2010.2045241

Observation of spin-orbit interaction parameter over a wide temperature range using potentiometric measurement

Youn Ho Park, Hyun Cheol Koo, Kyung Ho Kim, Hyung Jun Kim, Joonyeon Chang, Suk Hee Han, Hijung Kim

KU-KIST Graduate School of Converging Science and Technology

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

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 In_0.52Al _0.48As/In_0.53Ga_0.47As/In_0.52Al _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
Article number	5467584
Pages (from-to)	1562-1564
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	46
Issue number	6
DOIs	https://doi.org/10.1109/TMAG.2010.2045241
Publication status	Published - 2010 Jun

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

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10.1109/TMAG.2010.2045241

Cite this

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title = "Observation of spin-orbit interaction parameter over a wide temperature range using potentiometric measurement",

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.",

keywords = "2-D electron gas (2DEG), Potentiometric measurement, Rashba effect, Spin-orbit interaction",

author = "Park, {Youn Ho} and Koo, {Hyun Cheol} and Kim, {Kyung Ho} and Kim, {Hyung Jun} and Joonyeon Chang and Han, {Suk Hee} and Hijung Kim",

note = "Funding Information: This work was supported by the KIST Institutional Program and the KRCF DRC Program.",

year = "2010",

month = jun,

doi = "10.1109/TMAG.2010.2045241",

language = "English",

volume = "46",

pages = "1562--1564",

journal = "IEEE Transactions on Magnetics",

issn = "0018-9464",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

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T1 - Observation of spin-orbit interaction parameter over a wide temperature range using potentiometric measurement

AU - Park, Youn Ho

AU - Koo, Hyun Cheol

AU - Kim, Kyung Ho

AU - Kim, Hyung Jun

AU - Chang, Joonyeon

AU - Han, Suk Hee

AU - Kim, Hijung

N1 - Funding Information: This work was supported by the KIST Institutional Program and the KRCF DRC Program.

PY - 2010/6

Y1 - 2010/6

N2 - 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.

AB - 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.

KW - 2-D electron gas (2DEG)

KW - Potentiometric measurement

KW - Rashba effect

KW - Spin-orbit interaction

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U2 - 10.1109/TMAG.2010.2045241

DO - 10.1109/TMAG.2010.2045241

M3 - Article

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VL - 46

SP - 1562

EP - 1564

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

IS - 6

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ER -

Observation of spin-orbit interaction parameter over a wide temperature range using potentiometric measurement

Abstract

Keywords

ASJC Scopus subject areas

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