Generation of electric-field-induced unconventional spin current

Datum

25.10.2022

Zeit

14:50 - 16:20

Sprecher

Arnab Bose

Zugehörigkeit

Johannes Gutenberg Universität Mainz

Sprache

en

Hauptthema

Physik

Andere Themen

Physik

Host

D. Peets

Beschreibung

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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Letztmalig verändert: 25.10.2022, 00:08:14