Effect of light illumination on the [100] uniaxial magnetic anisotropy of GaMnAs film

Hakjoon Lee; Seonghoon Choi; Sangyeop Lee; Taehee Yoo; Sanghoon Lee; X. Liu; J. K. Furdyna

doi:10.1016/j.ssc.2014.04.010

Effect of light illumination on the [100] uniaxial magnetic anisotropy of GaMnAs film

Hakjoon Lee, Seonghoon Choi, Sangyeop Lee, Taehee Yoo, Sanghoon Lee, X. Liu, J. K. Furdyna

Department of Physics

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

3 Citations (Scopus)

Abstract

The effect of light illumination on the magnetic anisotropy of GaMnAs has been investigated by using the planar Hall effect measurement. In as-grown GaMnAs, typical types of magnetic anisotropies, cubic crystalline anisotropy along the 〈100〉 directions and uniaxial anisotropy along the [110] direction, were clearly observed in the planar Hall resistance (PHR) measurements. The behavior of the PHR, however, changed after light illumination by showing significant asymmetry between the [100] and the [010] directions, which was explained by the appearance (or enhancement) of a new type of uniaxial anisotropy along the [100] direction in the film. The experiment reveals that light illumination can significantly alter the magnetic anisotropies of the GaMnAs film by changing the magnitude of existing anisotropies as well as inducing anisotropy along the [100] direction.

Original language	English
Pages (from-to)	27-30
Number of pages	4
Journal	Solid State Communications
Volume	192
DOIs	https://doi.org/10.1016/j.ssc.2014.04.010
Publication status	Published - 2014 Aug

Keywords

A. Ferromagnetism
A. Semiconductor
D. Anisotropy
E. Transport

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Materials Chemistry

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10.1016/j.ssc.2014.04.010

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@article{f1e061b9e24c4bc29ecb6597a2f360da,

title = "Effect of light illumination on the [100] uniaxial magnetic anisotropy of GaMnAs film",

abstract = "The effect of light illumination on the magnetic anisotropy of GaMnAs has been investigated by using the planar Hall effect measurement. In as-grown GaMnAs, typical types of magnetic anisotropies, cubic crystalline anisotropy along the 〈100〉 directions and uniaxial anisotropy along the [110] direction, were clearly observed in the planar Hall resistance (PHR) measurements. The behavior of the PHR, however, changed after light illumination by showing significant asymmetry between the [100] and the [010] directions, which was explained by the appearance (or enhancement) of a new type of uniaxial anisotropy along the [100] direction in the film. The experiment reveals that light illumination can significantly alter the magnetic anisotropies of the GaMnAs film by changing the magnitude of existing anisotropies as well as inducing anisotropy along the [100] direction.",

keywords = "A. Ferromagnetism, A. Semiconductor, D. Anisotropy, E. Transport",

author = "Hakjoon Lee and Seonghoon Choi and Sangyeop Lee and Taehee Yoo and Sanghoon Lee and X. Liu and Furdyna, {J. K.}",

note = "Funding Information: This research was supported by the Converging Research Center Program through the Ministry of Science , ICT and Future Planning ( 2013K000311 ), by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science , ICT & Future Planning ( 2013R1A1A2004505 ); by a Korea University Grant; and by the National Science Foundation Grants DMR10-05851.",

year = "2014",

month = aug,

doi = "10.1016/j.ssc.2014.04.010",

language = "English",

volume = "192",

pages = "27--30",

journal = "Solid State Communications",

issn = "0038-1098",

publisher = "Elsevier Limited",

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TY - JOUR

T1 - Effect of light illumination on the [100] uniaxial magnetic anisotropy of GaMnAs film

AU - Lee, Hakjoon

AU - Choi, Seonghoon

AU - Lee, Sangyeop

AU - Yoo, Taehee

AU - Lee, Sanghoon

AU - Liu, X.

AU - Furdyna, J. K.

N1 - Funding Information: This research was supported by the Converging Research Center Program through the Ministry of Science , ICT and Future Planning ( 2013K000311 ), by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science , ICT & Future Planning ( 2013R1A1A2004505 ); by a Korea University Grant; and by the National Science Foundation Grants DMR10-05851.

PY - 2014/8

Y1 - 2014/8

N2 - The effect of light illumination on the magnetic anisotropy of GaMnAs has been investigated by using the planar Hall effect measurement. In as-grown GaMnAs, typical types of magnetic anisotropies, cubic crystalline anisotropy along the 〈100〉 directions and uniaxial anisotropy along the [110] direction, were clearly observed in the planar Hall resistance (PHR) measurements. The behavior of the PHR, however, changed after light illumination by showing significant asymmetry between the [100] and the [010] directions, which was explained by the appearance (or enhancement) of a new type of uniaxial anisotropy along the [100] direction in the film. The experiment reveals that light illumination can significantly alter the magnetic anisotropies of the GaMnAs film by changing the magnitude of existing anisotropies as well as inducing anisotropy along the [100] direction.

AB - The effect of light illumination on the magnetic anisotropy of GaMnAs has been investigated by using the planar Hall effect measurement. In as-grown GaMnAs, typical types of magnetic anisotropies, cubic crystalline anisotropy along the 〈100〉 directions and uniaxial anisotropy along the [110] direction, were clearly observed in the planar Hall resistance (PHR) measurements. The behavior of the PHR, however, changed after light illumination by showing significant asymmetry between the [100] and the [010] directions, which was explained by the appearance (or enhancement) of a new type of uniaxial anisotropy along the [100] direction in the film. The experiment reveals that light illumination can significantly alter the magnetic anisotropies of the GaMnAs film by changing the magnitude of existing anisotropies as well as inducing anisotropy along the [100] direction.

KW - A. Ferromagnetism

KW - A. Semiconductor

KW - D. Anisotropy

KW - E. Transport

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SN - 0038-1098

VL - 192

SP - 27

EP - 30

JO - Solid State Communications

JF - Solid State Communications

ER -

Effect of light illumination on the [100] uniaxial magnetic anisotropy of GaMnAs film

Abstract

Keywords

ASJC Scopus subject areas

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