Spin-orbit torque and spin pumping in YIG/Pt with interfacial insertion layers
Abstract
We experimentally investigate spin-orbit torque and spin pumping in Y3Fe5O12 (YIG)/Pt bilayers with ultrathin insertion layers at the interface. An insertion layer of Cu suppresses both spin-orbit torque and spin pumping, whereas an insertion layer of Ni80Fe20 (permalloy, Py) enhances them in a quantitatively consistent manner with the reciprocity of the two spin transmission processes. However, we observe a large enhancement of Gilbert damping with the insertion of Py that cannot be accounted for solely by spin pumping, suggesting significant spin-memory loss due to the interfacial magnetic layer. Our findings indicate that the magnetization at the YIG-metal interface strongly influences the transmission and depolarization of pure spin current.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 30, 2018
- Source ID
- 10.1063/1.5025623
Entities
People
- Alexei Matyushov
- Amine M. Belkessam
- Brandon M. Howe
- Christopher J. Babroski
- Gail J. Brown
- Hyung-min Jeon
- John G Jones
- Michael E. McConney
- Nian X. Sun
- Satoru Emori
- Tianxiang Nan
Organizations
- Air Force Research Laboratory
- National Science Foundation
- Northeastern University
- University of Wisconsin–Madison
- Virginia Tech
- W. M. Keck Foundation
- Wright State University