Spin Hall magnetoresistance in Pt/hexagonal rare-earth ferrite heterostructures
ORAL
Abstract
Multiferroic materials are promising for spintronic application due to their strongly coupled ferroic orders. Hexagonal rare-earth ferrites (h-RFeO3) possess ferroelectric and anti-ferromagnetic orders that could modify spin-charge conversion with a large electric polarization. We report measurements of field-dependent and angle-dependent magnetoresistance from Pt/h-RFeO3 heterostructures at various temperatures. It is found that spin Hall magnetoresistance (SMR) and anisotropic magnetoresistance (AMR) coexist in the bilayers. SMR has a temperature dependence similar with those from Pt/ferromagnetic insulators, but the temperature dependence of AMR reaches local maximum around Neel temperature of h-RFeO3 and changes sign at lower temperatures. The results are discussed within the frame of SMR theory by considering the magnetocrystalline anisotropy of h-RFeO3.
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Presenters
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Jing Li
University of Nebraska - Lincoln
Authors
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Jing Li
University of Nebraska - Lincoln
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Yu Yun
Physics & Astronomy, University of Nebraska-Lincoln, University of Nebraska - Lincoln
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Xiaoshan Xu
Physics & Astronomy, University of Nebraska-Lincoln, Nebraska Center for Materials and Nanoscience and Department of Physics and Astronomy, University of Nebraska - Lincoln, University of Nebraska-Lincoln, University of Nebraska - Lincoln, Department of Physics and Astronomy, University of Nebraska - Lincoln, Physics and Astronomy, University of Nebraska-Lincoln