Strong spin-lifetime anisotropy in ultrathin black phosphorus


Two-dimensional materials such as graphene and black phosphorus hold great promises for room temperature spintronics applications requiring long-distance spin communication [1]. In this talk, I will focus on spin transport in ultra-thin black phosphorus. After introducing its exceptional spin transport properties (e.g. gate-tunable nanosecond spin lifetimes and record non-local spin signals) [2], I will discuss our recent efforts focused on investigating the impact of its unique crystal structure on spin dynamics. The observation of strong anisotropic spin transport provides opportunities to realize directional control of spin propagation.

[1] A. Avsar et al., Rev. Mod. Phys. 92, 021003 (2020)
[2] A. Avsar et al., Nat. Phys. 13, 888-894 (2017)