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


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.

SUBMITTER: Chongthanaphisut P 

PROVIDER: S-EPMC6427040 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature

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

Chongthanaphisut Phunvira P   Bac Seul-Ki SK   Choi Seonghoon S   Lee Kyung Jae KJ   Chang Jihoon J   Choi Suho S   Lee Sanghoon S   Nnaji Moses M   Liu X X   Dobrowolska M M   Furdyna J K JK  

Scientific reports 20190318 1


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 wi  ...[more]

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