Temperature dependence of the properties of stochastic magnetic tunnel junction with perpendicular magnetization

Haruna Kaneko; Rikuto Ota; Keito Kobayashi; Shun Kanai; Mehrdad Elyasi; Gerrit E. W. Bauer; Hideo Ohno; Shunsuke Fukami

doi:10.35848/1882-0786/ad43b0

Applied Physics Express (Jan 2024)

Temperature dependence of the properties of stochastic magnetic tunnel junction with perpendicular magnetization

Haruna Kaneko,
Rikuto Ota,
Keito Kobayashi,
Shun Kanai,
Mehrdad Elyasi,
Gerrit E. W. Bauer,
Hideo Ohno,
Shunsuke Fukami

Affiliations

Haruna Kaneko: ORCiD; Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University , Sendai 980-8577, Japan; Graduate School of Engineering, Tohoku University , Sendai 980-0845, Japan
Rikuto Ota: Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University , Sendai 980-8577, Japan; Graduate School of Engineering, Tohoku University , Sendai 980-0845, Japan
Keito Kobayashi: ORCiD; Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University , Sendai 980-8577, Japan; Graduate School of Engineering, Tohoku University , Sendai 980-0845, Japan
Shun Kanai: ORCiD; Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University , Sendai 980-8577, Japan; Graduate School of Engineering, Tohoku University , Sendai 980-0845, Japan; JST PRESTO, Japan Science and Technology Agency, Kawaguchi 332-0012, Japan; Division for the Establishment of Frontier Sciences, Tohoku University , Sendai, 980-8577 Japan; Center for Science and Innovation in Spintronics, Tohoku University , Sendai 980-8577, Japan; WPI-Advanced Institute for Materials Research, Tohoku University , Sendai 980-8577, Japan; National Institutes for Quantum Science and Technology , Takasaki 370-1207, Japan
Mehrdad Elyasi: ORCiD; Center for Science and Innovation in Spintronics, Tohoku University , Sendai 980-8577, Japan; WPI-Advanced Institute for Materials Research, Tohoku University , Sendai 980-8577, Japan; IMR, Tohoku University , Sendai 980-8577, Japan
Gerrit E. W. Bauer: ORCiD; Center for Science and Innovation in Spintronics, Tohoku University , Sendai 980-8577, Japan; WPI-Advanced Institute for Materials Research, Tohoku University , Sendai 980-8577, Japan; IMR, Tohoku University , Sendai 980-8577, Japan; Kavli ITS, UCAS, Beijing 100190, People’s Republic of China
Hideo Ohno: ORCiD; Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University , Sendai 980-8577, Japan; Center for Science and Innovation in Spintronics, Tohoku University , Sendai 980-8577, Japan; WPI-Advanced Institute for Materials Research, Tohoku University , Sendai 980-8577, Japan; Center for Innovative Integrated Electronic Systems, Tohoku University , Sendai 980-0845, Japan
Shunsuke Fukami: ORCiD; Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University , Sendai 980-8577, Japan; Graduate School of Engineering, Tohoku University , Sendai 980-0845, Japan; Center for Science and Innovation in Spintronics, Tohoku University , Sendai 980-8577, Japan; WPI-Advanced Institute for Materials Research, Tohoku University , Sendai 980-8577, Japan; Center for Innovative Integrated Electronic Systems, Tohoku University , Sendai 980-0845, Japan; Inamori Research Institute for Science , Kyoto 600-8411, Japan

DOI: https://doi.org/10.35848/1882-0786/ad43b0
Journal volume & issue: Vol. 17, no. 5
p. 053001

Abstract

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Stochastic magnetic tunnel junctions (s-MTJs) are attracting attention as key elements for spintronics-based probabilistic (p-) computers. The performance of p-computers is governed by the time-domain and the time-averaged response of single s-MTJs varying with temperature. Here we present results of the time-domain (rf) voltage and time-averaged (dc) resistance $\left\langle R\right\rangle $ of s-MTJs with perpendicular magnetization as functions of perpendicular magnetic fields H _z and temperatures T = 20 °C–130 °C. We observe that both relaxation time (time-domain response) and the slope of the $\left\langle R\right\rangle $ – ${H}_{z}$ curve (time-averaged response) decrease with increasing temperature. We discuss the physics underlying these results including the thermally induced spatially non-uniform collective spin dynamics.

Published in Applied Physics Express

ISSN: 1882-0778 (Print); 1882-0786 (Online)
Publisher: IOP Publishing
Country of publisher: United Kingdom
LCC subjects: Science: Physics
Website: https://iopscience.iop.org/journal/1882-0786

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