Proceedings Article | 4 October 2024
Igor Žutić, Konstantin Densiov, Igor Rozhansky, Sergio Valenzuela, Pambiang Abel Dainone, Pierre Renucci, Xavier Marie, Henri Jaffres, Jean-Marie George, Nils Gerhardt, Markus Lindemann, Yuan Lu
KEYWORDS: Terahertz radiation, Solid state physics, Quantum switching, Quantum spin, Quantum photonics, Quantum light, Quantum dot light emitters, Magnetism, Light absorption, Depolarization
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)
