Generation of electric-field-induced unconventional spin current

Date

Oct 25, 2022

Time

2:50 PM - 4:20 PM

Speaker

Arnab Bose

Affiliation

Johannes Gutenberg Universität Mainz

Language

Main Topic

Physik

Other Topics

Physik

Host

D. Peets

Description

Abstract

Efficient generation of spin current is one of the primary goals of spintronics. In the first part, I shall talk about the electric-current-driven unconventional spin-current generation [1] using the novel spin-split bands of altermagnet RuO2 [2], which could be a potential root to achieve the field-free switching of perpendicular magnet for high-density memory applications. In the next part of my talk, I shall discuss our recent results of thermal generation of spin current due to the spin Nernst torque of heavy metals such as Pt and W [3], which could be useful for energy harvesting spin-caloritronic research applications.

[1] A. Bose, N. J. Schreiber, R. Jain, D.-F. Shao, H. P. Nair, J. Sun, X. S. Zhang, D. A. Muller, E. Y. Tsymbal, D. G. Schlom, and D. C. Ralph, Tilted Spin Current Generated by the Collinear Antiferromagnet Ruthenium Dioxide, Nat. Electron. 5, 267 (2022).

[2] R. González-Hernández, L. Šmejkal, K. Výborný, Y. Yahagi, J. Sinova, T. Jungwirth, and J. Železný, Efficient Electrical Spin Splitter Based on Nonrelativistic Collinear Antiferromagnetism, Phys. Rev. Lett. 126, 127701 (2021).

[3] A. Bose, R. Jain, J. J. Bauer, R. A. Buhrman, C. A. Ross, and D. C. Ralph, Origin of Transverse Voltages Generated by Thermal Gradients and Electric Fields in Ferrimagnetic-Insulator/Heavy-Metal Bilayers, Phys. Rev. B 105, L100408 (2022).

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Last modified: Oct 25, 2022, 12:08:14 AM

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Location

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TU Dresden, Faculty of Science, Department of PhysicsHaeckelstraße301069Dresden

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