Spin-charge-photon conversion: from THz spin-light coupling to electrical helicity reversal

Igor Žutić; Konstantin Densiov; Igor Rozhansky; Sergio O. Valenzuela; Pambiang Abel Dainone; Pierre Renucci; Xavier Marie; Henri Jaffres; Jean-Marie George; Nils Gerhardt; Markus Lindemann; Yuan Lu

doi:10.1117/12.3032241

4 October 2024 Spin-charge-photon conversion: from THz spin-light coupling to electrical helicity reversal

Igor Žutić, Konstantin Densiov, Igor Rozhansky, Sergio O. Valenzuela, Pambiang Abel Dainone, Pierre Renucci, Xavier Marie, Henri Jaffres, Jean-Marie George, Nils Gerhardt, Markus Lindemann, Yuan Lu

Author Affiliations +

Proceedings Volume PC13119, Spintronics XVII; PC1311910 (2024) https://doi.org/10.1117/12.3032241
Event: Nanoscience + Engineering, 2024, San Diego, California, United States

Abstract

In solid-state systems spin-orbit coupling (SOC) is a friend and foe[1]. While SOC is responsible for the loss of information and spin depolarization, it is also crucial for transferring spin between different systems[2]. We focus on two SOC manifestations. (i) Electric dipole spin resonance in proximitized Dirac material where we reveal an overlooked resonant spin-pseudospin coupling responsible for a huge increase of THz absorption, explained by coupled spin-pseudospin torques[3], (ii) Spin-orbit torque magnetization switching, which allows to electrically reverse the helicity of the emitted light from III-V quantum dots at 300 K and zero applied magnetic field[4]. We discuss the implications of these findings, from elucidating hidden proximity effects to establishing a missing link between photonics, electronics, and spintronics[5,6]. 1. I. Žutić, H. Dery, Nat. Mater. 10, 647 (2011) 2. I. Žutić, J. Fabian, S. Das Sarma, RMP 76, 323 (2004) 3. K. S. Denisov, I. V. Rozhansky, S. O. Valenzuela, I. Žutić, preprint 4. P. A. Dainone et al., Nature 627, 783 (2024) 5. I. Žutić et al., Proximitized Materials, Mater. Today 22, 85 (2019) 6. M. Lindemann et al., Nature 568, 212 (2019)

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Igor Žutić, Konstantin Densiov, Igor Rozhansky, Sergio O. Valenzuela, Pambiang Abel Dainone, Pierre Renucci, Xavier Marie, Henri Jaffres, Jean-Marie George, Nils Gerhardt, Markus Lindemann, and Yuan Lu "Spin-charge-photon conversion: from THz spin-light coupling to electrical helicity reversal", Proc. SPIE PC13119, Spintronics XVII, PC1311910 (4 October 2024); https://doi.org/10.1117/12.3032241

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KEYWORDS

Terahertz radiation

Depolarization

Light absorption

Magnetism

Quantum dot light emitters

Quantum light

Quantum photonics

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