Proximity Induced Spin Currents and Spin-Orbit Torques in Graphene 1T-TaS2


In this presentation, we begin by providing a perspective on the fundamental concepts of spin-orbit torque. Next, by employing Green’s function quantum transport [1] and an effective tight-binding model with fitted parameters to first-principles calculations [2], we demonstrate how adjusting the Rashba phase angle can switch between different spintronic mechanisms, including the Rashba- Edelstein effect, and spin Hall effect, providing precise control over spin transport in the system.  Furthermore, we will discuss how changes in the in-plane magnetization orientation in 1T-TaS2 can also switch the spintronic mechanisms by spin-orbit torque acting on proximity-induced mag- netization in graphene [3]. We also briefly introduce the OpenMX code, a software package for nano-scale material simulations based on density functional theories (DFT), norm-conserving pseu- dopotentials, and pseudo-atomic localized basis functions [4].

[1] Maedeh Rassekh, Hernán Santos, Andrea Latgé, Leonor Chico, Saber Farjami Shayesteh, and
Juan Jose Palacios, Phys. Rev. B 104, 235429 (2021).
[2] Karol Szałowski et al., 2D Materials 10, 025013 (2023).
[3] Rassekh, M., M. Milivojević, and M. Gmitra, IEEE 13th Int. Conference Nanomaterials:
Applications & Properties (NAP) (2023).
[4] T. Ozaki, Phys. Rev. B 67, 155108 (2003).