Interlayer exchange coupling in ferromagnetic semiconductor trilayers with out-of-plane magnetic anisotropy

Phunvira Chongthanaphisut, Seul Ki Bac, Seonghoon Choi, Kyung Jae Lee, Jihoon Chang, Suho Choi, Sang Hoon Lee, Moses Nnaji, X. Liu, M. Dobrowolska, J. K. Furdyna

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Abstract

We report the observation of ferromagnetic (FM) and antiferromagnetic (AFM) interlayer exchange coupling (IEC) in GaMnAsP-based trilayer structures with out-of-plane magnetic anisotropy. Magnetization and anomalous Hall effect (AHE) measurements show well-resolved magnetization transitions corresponding to the two GaMnAsP layers. Minor loop measurements reveal a characteristic shift caused by IEC in all trilayer samples investigated. Interestingly, the FM IEC changes to AFM IEC for a trilayer with the thinnest (7 nm) top GaMnAsP layer as the temperature increases. The observation of temperature-induced transition of FM and AFM IEC in the same sample suggests the possibility of device applications by controlling the type of IEC in such GaMnAsP-based multilayers.

Original languageEnglish
Article number4740
JournalScientific Reports
Volume9
Issue number1
DOIs
Publication statusPublished - 2019 Dec 1

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Semiconductors
Anisotropy
Observation
Transition Temperature
Equipment and Supplies
Temperature

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Chongthanaphisut, P., Bac, S. K., Choi, S., Lee, K. J., Chang, J., Choi, S., ... Furdyna, J. K. (2019). Interlayer exchange coupling in ferromagnetic semiconductor trilayers with out-of-plane magnetic anisotropy. Scientific Reports, 9(1), [4740]. https://doi.org/10.1038/s41598-019-41138-9

Interlayer exchange coupling in ferromagnetic semiconductor trilayers with out-of-plane magnetic anisotropy. / Chongthanaphisut, Phunvira; Bac, Seul Ki; Choi, Seonghoon; Lee, Kyung Jae; Chang, Jihoon; Choi, Suho; Lee, Sang Hoon; Nnaji, Moses; Liu, X.; Dobrowolska, M.; Furdyna, J. K.

In: Scientific Reports, Vol. 9, No. 1, 4740, 01.12.2019.

Research output: Contribution to journalArticle

Chongthanaphisut, P, Bac, SK, Choi, S, Lee, KJ, Chang, J, Choi, S, Lee, SH, Nnaji, M, Liu, X, Dobrowolska, M & Furdyna, JK 2019, 'Interlayer exchange coupling in ferromagnetic semiconductor trilayers with out-of-plane magnetic anisotropy', Scientific Reports, vol. 9, no. 1, 4740. https://doi.org/10.1038/s41598-019-41138-9
Chongthanaphisut, Phunvira ; Bac, Seul Ki ; Choi, Seonghoon ; Lee, Kyung Jae ; Chang, Jihoon ; Choi, Suho ; Lee, Sang Hoon ; Nnaji, Moses ; Liu, X. ; Dobrowolska, M. ; Furdyna, J. K. / Interlayer exchange coupling in ferromagnetic semiconductor trilayers with out-of-plane magnetic anisotropy. In: Scientific Reports. 2019 ; Vol. 9, No. 1.
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AU - Chongthanaphisut, Phunvira

AU - Bac, Seul Ki

AU - Choi, Seonghoon

AU - Lee, Kyung Jae

AU - Chang, Jihoon

AU - Choi, Suho

AU - Lee, Sang Hoon

AU - Nnaji, Moses

AU - Liu, X.

AU - Dobrowolska, M.

AU - Furdyna, J. K.

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AB - We report the observation of ferromagnetic (FM) and antiferromagnetic (AFM) interlayer exchange coupling (IEC) in GaMnAsP-based trilayer structures with out-of-plane magnetic anisotropy. Magnetization and anomalous Hall effect (AHE) measurements show well-resolved magnetization transitions corresponding to the two GaMnAsP layers. Minor loop measurements reveal a characteristic shift caused by IEC in all trilayer samples investigated. Interestingly, the FM IEC changes to AFM IEC for a trilayer with the thinnest (7 nm) top GaMnAsP layer as the temperature increases. The observation of temperature-induced transition of FM and AFM IEC in the same sample suggests the possibility of device applications by controlling the type of IEC in such GaMnAsP-based multilayers.

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