Channel width effect on the spin-orbit interaction parameter in a two-dimensional electron gas

Jae Hyun Kwon; Hyun Cheol Koo; Joonyeon Chang; Suk Hee Han; Jonghwa Eom

doi:10.1063/1.2714993

Channel width effect on the spin-orbit interaction parameter in a two-dimensional electron gas

Jae Hyun Kwon, Hyun Cheol Koo, Joonyeon Chang, Suk Hee Han, Jonghwa Eom

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

40 Citations (Scopus)

Abstract

The spin splitting energy obtained from the Shubnikov-de Haas oscillation increases with decreasing channel width (w) of the InAs-based heterostructure. Since the surface charge concentration depends only weakly on w, the channel width dependence of the spin splitting energy is attributed to variations in the spin-orbit interaction strength. The spin-orbit interaction parameter was found to be inversely proportional to w in the range of w=2-64 μm. Our findings indicate that a strong spin-orbit interaction is induced in a narrow channel due to suppression of the spin precession length for a thin quantum well layer system.

Original language	English
Article number	112505
Journal	Applied Physics Letters
Volume	90
Issue number	11
DOIs	https://doi.org/10.1063/1.2714993
Publication status	Published - 2007
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2714993

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title = "Channel width effect on the spin-orbit interaction parameter in a two-dimensional electron gas",

abstract = "The spin splitting energy obtained from the Shubnikov-de Haas oscillation increases with decreasing channel width (w) of the InAs-based heterostructure. Since the surface charge concentration depends only weakly on w, the channel width dependence of the spin splitting energy is attributed to variations in the spin-orbit interaction strength. The spin-orbit interaction parameter was found to be inversely proportional to w in the range of w=2-64 μm. Our findings indicate that a strong spin-orbit interaction is induced in a narrow channel due to suppression of the spin precession length for a thin quantum well layer system.",

author = "Kwon, {Jae Hyun} and Koo, {Hyun Cheol} and Joonyeon Chang and Han, {Suk Hee} and Jonghwa Eom",

note = "Funding Information: This work was supported by the Vision 21 Program of KIST. ",

year = "2007",

doi = "10.1063/1.2714993",

language = "English",

volume = "90",

journal = "Applied Physics Letters",

issn = "0003-6951",

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T1 - Channel width effect on the spin-orbit interaction parameter in a two-dimensional electron gas

AU - Kwon, Jae Hyun

AU - Koo, Hyun Cheol

AU - Chang, Joonyeon

AU - Han, Suk Hee

AU - Eom, Jonghwa

N1 - Funding Information: This work was supported by the Vision 21 Program of KIST.

PY - 2007

Y1 - 2007

N2 - The spin splitting energy obtained from the Shubnikov-de Haas oscillation increases with decreasing channel width (w) of the InAs-based heterostructure. Since the surface charge concentration depends only weakly on w, the channel width dependence of the spin splitting energy is attributed to variations in the spin-orbit interaction strength. The spin-orbit interaction parameter was found to be inversely proportional to w in the range of w=2-64 μm. Our findings indicate that a strong spin-orbit interaction is induced in a narrow channel due to suppression of the spin precession length for a thin quantum well layer system.

AB - The spin splitting energy obtained from the Shubnikov-de Haas oscillation increases with decreasing channel width (w) of the InAs-based heterostructure. Since the surface charge concentration depends only weakly on w, the channel width dependence of the spin splitting energy is attributed to variations in the spin-orbit interaction strength. The spin-orbit interaction parameter was found to be inversely proportional to w in the range of w=2-64 μm. Our findings indicate that a strong spin-orbit interaction is induced in a narrow channel due to suppression of the spin precession length for a thin quantum well layer system.

UR - http://www.scopus.com/inward/record.url?scp=33947322519&partnerID=8YFLogxK

U2 - 10.1063/1.2714993

DO - 10.1063/1.2714993

M3 - Article

AN - SCOPUS:33947322519

SN - 0003-6951

VL - 90

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 11

M1 - 112505

ER -

Channel width effect on the spin-orbit interaction parameter in a two-dimensional electron gas

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