Pt Magnetic Polarization on Y₃Fe₅O₁₂ and Magnetotransport Characteristics

Authors

Y. M. Lu
Y. Choi
C. M. Ortega
Xuemei Cheng, Bryn Mawr CollegeFollow
J. W. Cai
S. Y. Huang
L. Sun
C. L. Chien

Document Type

Article

Version

Publisher's PDF

Publication Title

Physical Review Letters

Volume

110

Publication Date

2013

Abstract

Thin Pt films on an yttrium iron garnet (YIG=Y₃Fe₅O₁₂) show ferromagneticlike transport properties, which may impact the functionality of Pt in spin current detection, but do not provide direct quantitative information on the Pt magnetization. We report magnetic x-ray magnetic circular dichroism measurements of YIG/Pt(1.5  nm) showing an average Pt moment of 0.054  μ_B at 300 K and 0.076  μ_B at 20 K. This observation indicates strong proximity effects and induced magnetic ordering in Pt on magnetic insulators and their contribution to the spin-related measurements should not be neglected. The transport characteristics also suggest considerable modifications in the Pt electronic structure due to magnetic ordering.

Publisher's Statement

© 2013 by the American Physical Society. The publisher's version of the article can be found at http://prl.aps.org/abstract/PRL/v110/i14/e147207.

Citation

Y. M. Lu et al., Phys. Rev. Lett. 110, 147207 (2013).

DOI

10.1103/PhysRevLett.110.147207