Applied Physics Letters

Ultrafast magnetization switching by combination of self-induced torque and spin transfer torque

R R. Arun R R. Gopal (Department of Physics, Centre for Nonlinear Science and Engineering, School of Electrical and Electronics Engineering, SASTRA Deemed University 3 , Thanjavur 613 401, Tamil Nadu,) V V. K. Chandrasekar (Department of Physics, Centre for Nonlinear Science and Engineering, School of Electrical and Electronics Engineering, SASTRA Deemed University 3 , Thanjavur 613 401, Tamil Nadu,) M M. Lakshmanan (Department of Nonlinear Dynamics, School of Physics, Bharathidasan University 4 , Tiruchirappalli 622 515, Tamil Nadu,)

Abstract

We studied the interplay between self-induced torque (SIT) and spin transfer torque (STT) in a magnetic tunnel junction, achieving ultrafast magnetization switching. By incorporating both the torques into the Landau–Lifshitz–Gilbert–Slonczewski (LLGS) equation, we significantly reduce the switching time from the nanosecond (ns) range to the picosecond (ps) range thereby enhancing energy-efficient spintronic and data storage technologies.

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Article Details

Volume / Issue Vol. 127, Issue 21
Published November 24, 2025
ISSN 0003-6951
Publisher American Institute of Physics

Journal Info

Applied Physics Letters

American Institute of Physics
ISSN: 0003-6951 Physical Sciences

Authors (4)

R

R. Arun

R

R. Gopal

Department of Physics, Centre for Nonlinear Science and Engineering, School of Electrical and Electronics Engineering, SASTRA Deemed University 3 , Thanjavur 613 401, Tamil Nadu,

V

V. K. Chandrasekar

Department of Physics, Centre for Nonlinear Science and Engineering, School of Electrical and Electronics Engineering, SASTRA Deemed University 3 , Thanjavur 613 401, Tamil Nadu,

M

M. Lakshmanan

Department of Nonlinear Dynamics, School of Physics, Bharathidasan University 4 , Tiruchirappalli 622 515, Tamil Nadu,

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