journal article·2018-05-01Open access

Orthogonal interfacial exchange coupling in GaMnAsP/GaMnAs bilayers

Xiang Li, Seul-Ki Bac, Sining Dong, Xinyu Liu, Sanghoon Lee, Sergei Rouvimov, Margaret Dobrowolska, Jacek K. Furdyna

AIP Advances· Volume 8· Issue 5

Abstract

We carried out a systematic study of magnetic ordering and magnetic interlayer coupling in Ga1-xMnxAs1-yPy/Ga1-xMnxAs bilayers using superconducting quantum interference device magnetometry and ferromagnetic resonance. Such bilayers are interesting, because the easy axis of the constituent materials are orthogonal. Our results show that the bilayers are strongly exchange-coupled at the interface, that manifests itself in the form of horizontal exchange-bias-like shifts of the hysteresis loops of the Ga1-xMnxAs layer, as observed in field-cooled magnetic measurements.
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Research context

OpenAlex topics: Magnetic properties of thin films · Physics of Superconductivity and Magnetism · Magnetic and transport properties of perovskites and related materials

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Affiliations

Department of Physics, University of Notre Dame 1 , Notre Dame, Indiana 46556, USA

Department of Physics, Korea University 2 , Seoul 136-701, Korea

Department of Electrical Engineering, University of Notre Dame 3 , Notre Dame, Indiana 46556, USA

Notre Dame Integrated Imaging Facility, University of Notre Dame 4 , Notre Dame, Indiana 46556, USA

Funding

National Research Foundation of Korea · Korea University · National Science Foundation

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