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Title: Current control of magnetic anisotropy via stress in a ferromagnetic metal waveguide

Abstract

In this work, we demonstrate that in-plane charge current can effectively control the spin precession resonance in an Al2O3/CoFeB/Ta heterostructure. Brillouin light scattering was used to detect the ferromagnetic resonance field under microwave excitation of spin waves at fixed frequencies. The current control of spin precession resonance originates from modification of the in-plane uniaxial magnetic anisotropy field $$H_k$$, which changes symmetrically with respect to the current direction. Numerical simulation suggests that the anisotropic stress introduced by joule heating plays an important role in controlling $$H_k$$. These results provide new insight into current manipulation of magnetic properties and have broad implications for spintronic devices.

Authors:
 [1];  [1];  [2];  [1];  [1];  [1];  [2];  [2];  [1]
  1. Univ. of Texas, Austin, TX (United States)
  2. Cornell Univ., Ithaca, NY (United States)
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Spins and Heat in Nanoscale Electronic Systems (SHINES)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Science Foundation (NSF)
OSTI Identifier:
1388929
Alternate Identifier(s):
OSTI ID: 1246766
Grant/Contract Number:  
SC0012670; DMR-1206404; DMR-1120296
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 93; Journal Issue: 14; Related Information: SHINES partners with University of California, Riverside (lead); Arizona State University; Colorado State University; Johns Hopkins University; University of California Irvine; University of California Los Angeles; University of Texas at Austin; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; phonons; thermal conductivity; thermoelectric; spin dynamics; spintronics

Citation Formats

An, Kyongmo, Ma, Xin, Pai, Chi-Feng, Yang, Jusang, Olsson, Kevin S., Erskine, James L., Ralph, Daniel C., Buhrman, Robert A., and Li, Xiaoqin. Current control of magnetic anisotropy via stress in a ferromagnetic metal waveguide. United States: N. p., 2016. Web. doi:10.1103/PhysRevB.93.140404.
An, Kyongmo, Ma, Xin, Pai, Chi-Feng, Yang, Jusang, Olsson, Kevin S., Erskine, James L., Ralph, Daniel C., Buhrman, Robert A., & Li, Xiaoqin. Current control of magnetic anisotropy via stress in a ferromagnetic metal waveguide. United States. doi:10.1103/PhysRevB.93.140404.
An, Kyongmo, Ma, Xin, Pai, Chi-Feng, Yang, Jusang, Olsson, Kevin S., Erskine, James L., Ralph, Daniel C., Buhrman, Robert A., and Li, Xiaoqin. Mon . "Current control of magnetic anisotropy via stress in a ferromagnetic metal waveguide". United States. doi:10.1103/PhysRevB.93.140404. https://www.osti.gov/servlets/purl/1388929.
@article{osti_1388929,
title = {Current control of magnetic anisotropy via stress in a ferromagnetic metal waveguide},
author = {An, Kyongmo and Ma, Xin and Pai, Chi-Feng and Yang, Jusang and Olsson, Kevin S. and Erskine, James L. and Ralph, Daniel C. and Buhrman, Robert A. and Li, Xiaoqin},
abstractNote = {In this work, we demonstrate that in-plane charge current can effectively control the spin precession resonance in an Al2O3/CoFeB/Ta heterostructure. Brillouin light scattering was used to detect the ferromagnetic resonance field under microwave excitation of spin waves at fixed frequencies. The current control of spin precession resonance originates from modification of the in-plane uniaxial magnetic anisotropy field $H_k$, which changes symmetrically with respect to the current direction. Numerical simulation suggests that the anisotropic stress introduced by joule heating plays an important role in controlling $H_k$. These results provide new insight into current manipulation of magnetic properties and have broad implications for spintronic devices.},
doi = {10.1103/PhysRevB.93.140404},
journal = {Physical Review B},
number = 14,
volume = 93,
place = {United States},
year = {2016},
month = {4}
}

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