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Title: Simultaneous Optical and Electrical Spin-Torque Magnetometry with Phase-sensitive Detection of Spin Precession

Abstract

Spin-based coherent information processing and encoding utilize the precession phase of spins in magnetic materials. However, the detection and manipulation of spin precession phases remain a major challenge for advanced spintronic functionalities. By using simultaneous electrical and optical detection, we demonstrate the direct measurement of the spin precession phase of a permalloy device driven by the spin-orbit torques from adjacent heavy metals. The spin Hall angle of the heavy metals can be independently determined from concurrent electrical and optical signals. The phase-sensitive optical detection also allows spatially-resolved measurements of local spin-torque parameters and ferromagnetic resonance with comprehensive amplitude and phase information. Here, our study offers a route toward future advanced characterizations of spin-torque oscillators, magnonic circuits, and tunneling junctions, where measuring the current-induced spin dynamics of individual nanomagnets is required.

Authors:
 [1];  [2];  [3];  [4];  [5];  [6];  [6];  [5];  [4];  [6];  [1]
  1. Oakland Univ., Rochester, MI (United States). Dept. of Physics; Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; Illinois Inst. of Technology, Chicago IL (United States). Dept. of Physics
  3. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; Huazhong Univ. of Science and Technology, Wuhan (China). School of Optical and Electronic Information
  4. Oakland Univ., Rochester, MI (United States). Dept. of Physics
  5. Oakland Univ., Rochester, MI (United States). Dept. of Electrical and Computer Engineering
  6. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; National Science Foundation (NSF)
OSTI Identifier:
1505167
Grant/Contract Number:  
AC02-06CH11357; DMR-1808892
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Applied
Additional Journal Information:
Journal Volume: 11; Journal Issue: 3; Journal ID: ISSN 2331-7043
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE

Citation Formats

Li, Yi, Saglam, Hilal, Zhang, Zhizhi, Bidthanapally, Rao, Xiong, Yuzan, Pearson, John E., Novosad, Valentine, Qu, Hongwei, Srinivasan, Gopalan, Hoffmann, Axel, and Zhang, Wei. Simultaneous Optical and Electrical Spin-Torque Magnetometry with Phase-sensitive Detection of Spin Precession. United States: N. p., 2019. Web. doi:10.1103/PhysRevApplied.11.034047.
Li, Yi, Saglam, Hilal, Zhang, Zhizhi, Bidthanapally, Rao, Xiong, Yuzan, Pearson, John E., Novosad, Valentine, Qu, Hongwei, Srinivasan, Gopalan, Hoffmann, Axel, & Zhang, Wei. Simultaneous Optical and Electrical Spin-Torque Magnetometry with Phase-sensitive Detection of Spin Precession. United States. doi:10.1103/PhysRevApplied.11.034047.
Li, Yi, Saglam, Hilal, Zhang, Zhizhi, Bidthanapally, Rao, Xiong, Yuzan, Pearson, John E., Novosad, Valentine, Qu, Hongwei, Srinivasan, Gopalan, Hoffmann, Axel, and Zhang, Wei. Tue . "Simultaneous Optical and Electrical Spin-Torque Magnetometry with Phase-sensitive Detection of Spin Precession". United States. doi:10.1103/PhysRevApplied.11.034047.
@article{osti_1505167,
title = {Simultaneous Optical and Electrical Spin-Torque Magnetometry with Phase-sensitive Detection of Spin Precession},
author = {Li, Yi and Saglam, Hilal and Zhang, Zhizhi and Bidthanapally, Rao and Xiong, Yuzan and Pearson, John E. and Novosad, Valentine and Qu, Hongwei and Srinivasan, Gopalan and Hoffmann, Axel and Zhang, Wei},
abstractNote = {Spin-based coherent information processing and encoding utilize the precession phase of spins in magnetic materials. However, the detection and manipulation of spin precession phases remain a major challenge for advanced spintronic functionalities. By using simultaneous electrical and optical detection, we demonstrate the direct measurement of the spin precession phase of a permalloy device driven by the spin-orbit torques from adjacent heavy metals. The spin Hall angle of the heavy metals can be independently determined from concurrent electrical and optical signals. The phase-sensitive optical detection also allows spatially-resolved measurements of local spin-torque parameters and ferromagnetic resonance with comprehensive amplitude and phase information. Here, our study offers a route toward future advanced characterizations of spin-torque oscillators, magnonic circuits, and tunneling junctions, where measuring the current-induced spin dynamics of individual nanomagnets is required.},
doi = {10.1103/PhysRevApplied.11.034047},
journal = {Physical Review Applied},
number = 3,
volume = 11,
place = {United States},
year = {2019},
month = {3}
}

Journal Article:
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