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Title: Characterizing the spin orbit torque field-like term in in-plane magnetic system using transverse field

Abstract

In this work, we present an efficient method for characterizing the spin orbit torque field-like term in an in-plane magnetized system using the harmonic measurement technique. This method does not require a priori knowledge of the planar and anomalous hall resistances and is insensitive to non-uniformity in magnetization, as opposed to the conventional harmonic technique. We theoretically and experimentally demonstrate that the field-like term in the Ta/Co/Pt film stack with in-plane magnetic anisotropy can be obtained by an in-plane transverse field sweep as expected, and magnetization non-uniformity is prevented by the application of fixed magnetic field. The experimental results are in agreement with the analytical calculations.

Authors:
 [1];  [2]; ; ; ; ; ; ; ;  [1];  [3]
  1. School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371 (Singapore)
  2. (Singapore)
  3. Data Storage Institute, A*STAR Agency for Science, Technology and Research, DSI Building, 5 Engineering Drive 1, Singapore 117608 (Singapore)
Publication Date:
OSTI Identifier:
22598833
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 120; Journal Issue: 8; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANISOTROPY; COBALT; FILMS; MAGNETIC FIELDS; MAGNETIZATION; ORBITS; PLATINUM; SPIN; TANTALUM; TORQUE

Citation Formats

Luo, Feilong, Data Storage Institute, A*STAR Agency for Science, Technology and Research, DSI Building, 5 Engineering Drive 1, Singapore 117608, Goolaup, Sarjoosing, Li, Sihua, Lim, Gerard Joseph, Tan, Funan, Engel, Christian, Zhang, Senfu, Ma, Fusheng, Lew, Wen Siang, E-mail: wensiang@ntu.edu.sg, and Zhou, Tiejun. Characterizing the spin orbit torque field-like term in in-plane magnetic system using transverse field. United States: N. p., 2016. Web. doi:10.1063/1.4961952.
Luo, Feilong, Data Storage Institute, A*STAR Agency for Science, Technology and Research, DSI Building, 5 Engineering Drive 1, Singapore 117608, Goolaup, Sarjoosing, Li, Sihua, Lim, Gerard Joseph, Tan, Funan, Engel, Christian, Zhang, Senfu, Ma, Fusheng, Lew, Wen Siang, E-mail: wensiang@ntu.edu.sg, & Zhou, Tiejun. Characterizing the spin orbit torque field-like term in in-plane magnetic system using transverse field. United States. doi:10.1063/1.4961952.
Luo, Feilong, Data Storage Institute, A*STAR Agency for Science, Technology and Research, DSI Building, 5 Engineering Drive 1, Singapore 117608, Goolaup, Sarjoosing, Li, Sihua, Lim, Gerard Joseph, Tan, Funan, Engel, Christian, Zhang, Senfu, Ma, Fusheng, Lew, Wen Siang, E-mail: wensiang@ntu.edu.sg, and Zhou, Tiejun. 2016. "Characterizing the spin orbit torque field-like term in in-plane magnetic system using transverse field". United States. doi:10.1063/1.4961952.
@article{osti_22598833,
title = {Characterizing the spin orbit torque field-like term in in-plane magnetic system using transverse field},
author = {Luo, Feilong and Data Storage Institute, A*STAR Agency for Science, Technology and Research, DSI Building, 5 Engineering Drive 1, Singapore 117608 and Goolaup, Sarjoosing and Li, Sihua and Lim, Gerard Joseph and Tan, Funan and Engel, Christian and Zhang, Senfu and Ma, Fusheng and Lew, Wen Siang, E-mail: wensiang@ntu.edu.sg and Zhou, Tiejun},
abstractNote = {In this work, we present an efficient method for characterizing the spin orbit torque field-like term in an in-plane magnetized system using the harmonic measurement technique. This method does not require a priori knowledge of the planar and anomalous hall resistances and is insensitive to non-uniformity in magnetization, as opposed to the conventional harmonic technique. We theoretically and experimentally demonstrate that the field-like term in the Ta/Co/Pt film stack with in-plane magnetic anisotropy can be obtained by an in-plane transverse field sweep as expected, and magnetization non-uniformity is prevented by the application of fixed magnetic field. The experimental results are in agreement with the analytical calculations.},
doi = {10.1063/1.4961952},
journal = {Journal of Applied Physics},
number = 8,
volume = 120,
place = {United States},
year = 2016,
month = 8
}
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