Dynamic control of random telegraph noise in magnetic tunnel junctions

Mehrdad Elyasi; Shun Kanai; Hideo Ohno; Shunsuke Fukami; Gerrit E. W. Bauer

doi:10.1103/knc8-vshx

Dynamic control of random telegraph noise in magnetic tunnel junctions

Mehrdad Elyasi ^1,2,*, Shun Kanai ^1,2,3,4,5,6, Hideo Ohno ^2,7, Shunsuke Fukami ^1,2,3,7,8, and Gerrit E. W. Bauer ^1,2,9

¹Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
²Center for Science and Innovation in Spintronics, Tohoku University, 2-1-1 Katahira, Sendai 980-8577, Japan
³Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Sendai 980-8577, Japan
⁴PRESTO, Japan Science and Technology Agency (JST), Kawaguchi 332-0012, Japan
⁵Division for the Establishment of Frontier Sciences of Organization for Advanced Studies at Tohoku University, Tohoku University, Sendai 980-8577, Japan
⁶National Institutes for Quantum Science and Technology, Takasaki 370‑1207, Japan
⁷Center for Innovative Integrated Electronic Systems, Tohoku University, 468-1 Aramaki Aza Aoba, Sendai 980-8572, Japan
⁸Inamori Research Institute of Science, Shijo, Shimogyo-ku, Kyoto 600-8411, Japan
⁹Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan

^*Contact author: mehrdad.elyasi.b2@tohoku.ac.jp

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Phys. Rev. Applied 26, 044029 – Published 8 October, 2026

DOI: https://doi.org/10.1103/knc8-vshx

Abstract

Faster random telegraph noise (RTN) in magnetic tunnel junctions (MTJs) would be beneficial for probabilistic computing applications. However, the interactions between the macrospin and spin waves with finite wave numbers reduce the RTN attempt frequency. We theoretically show that mode-selective heating and cooling by parametric excitation of Kittel mode or propagating spin waves can substantially increase or decrease the RTN frequency, respectively, and propose a nonlinear cooling mechanism that accelerates the switching dynamics. We outline experimental pathways to characterize the nonlinear processes that maximize the operation speed of MTJ-based probabilistic (p-) bits.

Physical Review Applied

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Dynamic control of random telegraph noise in magnetic tunnel junctions

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