Work

Magnetizing weak links by time-dependent spin-orbit interactions: Momentum conserving and non-conserving processes

Year: 2025

Type: article

Abstract: Rashba spin-orbit interactions generated by time-dependent electric fields acting on weak links (that couple together non-magnetic macroscopic leads) can magnetize the junction. The Rashba spin-orbit interaction that affects the spins of electrons tunneling through the weak links changes their momentum concomitantly. We establish the connection between the magnetization flux induced by processes that conserve momentum and the magnetization created by tunneling events that do not. Control of the induced magnetization can be achieved by tuning the polarization of the ac electric field responsible for the spin-orbit Rashba interaction (e.g., from being circular to linear), by changing the applied bias voltage, and by varying the degree of a gate voltage-induced asymmetry of the device.

Source: Low Temperature Physics

DOI: 10.1063/10.0039898

Authors: Debashree Chowdhury, O. Entin-Wohlman, A. Aharony, R. I. Shekhter, M. Jonson

Institutions: Indian Institute of Technology Roorkee, Tel Aviv University, University of Gothenburg

Language: English

Topic: Quantum and electron transport phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: Department of Science and Technology, Ministry of Science and Technology, India

Award: G7610193778