Challenges and opportunities in searching for Rashba-Dresselhaus materials for efficient spin-charge interconversion at room temperature

• DOI: 10.1016/j.cossms.2024.101145
• Publication Date: 2024-02-28T17:51:42Z
• Authors: Zixu Wang; Zhizhong Chen; Rui Xu; Hanyu Zhu; Ravishankar Sunda...; Jian Shi
• Keywords: Rashba effect; Momentum (technical analysis); Charge carrier; Spin Current

Spintronic logic devices require efficient spin-charge interconversion: converting charge current to spin current and spin current to charge current. In spin-orbit materials that are regarded as the most promising candidate for spintronic logic devices, one mechanism that is responsible for spin-charge interconversion is Edelstein and inverse Edelstein effects based on spin-momentum locking in materials with Rashba-type spin-orbit coupling. Over last decade, there has been rapid progresses for increasing interconversion efficiencies due to the Edelstein effect in a few Rashba-Dresselhaus materials and topological insulators, making Rashba spin-momentum locking a promising technological solution for spin-orbit logic devices. However, despite the rapid progress that leads to high spin-charge interconversion efficiency at cryogenic temperatures, the room-temperature efficiency needed for technological applications is still low. This paper presents our understanding on the challenges and opportunities in searching for Rashba-Dresselhaus materials for efficient spin-charge interconversion at room temperature by focusing on materials properties such as Rashba coefficients, momentum relaxation times, spin-momentum locking relations and electrical conductivities.<br/>Comment: 5 figures<br/>