Magnetotransport in metal/insulating-ferromagnet heterostructures: Spin Hall magnetoresistance or magnetic proximity effect

TY - JOUR

T1 - Magnetotransport in metal/insulating-ferromagnet heterostructures

T2 - Spin Hall magnetoresistance or magnetic proximity effect

AU - Zhou, X.

AU - Ma, L.

AU - Shi, Z.

AU - Fan, W. J.

AU - Zheng, Jian Guo

AU - Evans, R. F L

AU - Zhou, S. M.

PY - 2015/8/4

Y1 - 2015/8/4

N2 - We study the anomalous Hall-like effect (AHLE) and the effective anisotropic magnetoresistance (EAMR) in antiferromagnetic γ-IrMn3/Y3Fe5O12(YIG) and Pt/YIG heterostructures. For γ-IrMn3/YIG, the EAMR and the AHLE resistivity change sign with temperature due to the competition between the spin Hall magnetoresistance (SMR) and the magnetic proximity effect (MPE) induced by the interfacial antiferromagnetic uncompensated magnetic moment. In contrast, for Pt/YIG, the AHLE resistivity changes sign with temperature whereas no sign change is observed in the EAMR. This is because the MPE and the SMR play a dominant role in the AHLE and the EAMR, respectively. As different types of galvanomagnetic properties, the AHLE and the EAMR have proved vital in disentangling the MPE and the SMR in metal/insulating-ferromagnet heterostructures.

AB - We study the anomalous Hall-like effect (AHLE) and the effective anisotropic magnetoresistance (EAMR) in antiferromagnetic γ-IrMn3/Y3Fe5O12(YIG) and Pt/YIG heterostructures. For γ-IrMn3/YIG, the EAMR and the AHLE resistivity change sign with temperature due to the competition between the spin Hall magnetoresistance (SMR) and the magnetic proximity effect (MPE) induced by the interfacial antiferromagnetic uncompensated magnetic moment. In contrast, for Pt/YIG, the AHLE resistivity changes sign with temperature whereas no sign change is observed in the EAMR. This is because the MPE and the SMR play a dominant role in the AHLE and the EAMR, respectively. As different types of galvanomagnetic properties, the AHLE and the EAMR have proved vital in disentangling the MPE and the SMR in metal/insulating-ferromagnet heterostructures.

UR - http://www.scopus.com/inward/record.url?scp=84939864592&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.92.060402

DO - 10.1103/PhysRevB.92.060402

M3 - Article

AN - SCOPUS:84939864592

SN - 1098-0121

VL - 92

JO - Physical Review B

JF - Physical Review B

IS - 6

M1 - 060402

ER -