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Title: Electric control of magnetization relaxation in thin film magnetic insulators.

Abstract

Control of magnetization relaxation in magnetic insulators via interfacial spin scattering is demonstrated. The experiments use nanometer-thick yttrium iron garnet (YIG)/Pt layered structures, with the Pt layer biased by an electric voltage. The bias voltage produces a spin current across the Pt thickness. As this current scatters off the YIG surface, it exerts a torque on the YIG surface spins. This torque can reduce or enhance the damping and thereby decrease or increase the ferromagnetic resonance linewidth of the YIG film, depending on the field/current configuration.

Authors:
; ; ; ; ; ;  [1];  [2]
  1. (Materials Science Division)
  2. (
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC); National Institute of Standards and Technology (NIST)
OSTI Identifier:
1033489
Report Number(s):
ANL/MSD/JA-71856
Journal ID: ISSN 0003-6951; APPLAB; TRN: US201202%%793
DOE Contract Number:  
DE-AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 99; Journal Issue: 16; Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
ENGLISH
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CONFIGURATION; DAMPING; FERRITE GARNETS; FERROMAGNETIC RESONANCE; MAGNETIZATION; RELAXATION; SCATTERING; SPIN; THICKNESS; THIN FILMS; TORQUE; YTTRIUM

Citation Formats

Wang, Z., Sun, Y., Song, Y-Y., Wu, M., Schultheiss, H., Pearson, J. E., Hoffmann, A., and Colorado State Univ.). Electric control of magnetization relaxation in thin film magnetic insulators.. United States: N. p., 2011. Web. doi:10.1063/1.3654148.
Wang, Z., Sun, Y., Song, Y-Y., Wu, M., Schultheiss, H., Pearson, J. E., Hoffmann, A., & Colorado State Univ.). Electric control of magnetization relaxation in thin film magnetic insulators.. United States. doi:10.1063/1.3654148.
Wang, Z., Sun, Y., Song, Y-Y., Wu, M., Schultheiss, H., Pearson, J. E., Hoffmann, A., and Colorado State Univ.). Sat . "Electric control of magnetization relaxation in thin film magnetic insulators.". United States. doi:10.1063/1.3654148.
@article{osti_1033489,
title = {Electric control of magnetization relaxation in thin film magnetic insulators.},
author = {Wang, Z. and Sun, Y. and Song, Y-Y. and Wu, M. and Schultheiss, H. and Pearson, J. E. and Hoffmann, A. and Colorado State Univ.)},
abstractNote = {Control of magnetization relaxation in magnetic insulators via interfacial spin scattering is demonstrated. The experiments use nanometer-thick yttrium iron garnet (YIG)/Pt layered structures, with the Pt layer biased by an electric voltage. The bias voltage produces a spin current across the Pt thickness. As this current scatters off the YIG surface, it exerts a torque on the YIG surface spins. This torque can reduce or enhance the damping and thereby decrease or increase the ferromagnetic resonance linewidth of the YIG film, depending on the field/current configuration.},
doi = {10.1063/1.3654148},
journal = {Applied Physics Letters},
issn = {0003-6951},
number = 16,
volume = 99,
place = {United States},
year = {2011},
month = {10}
}