AP Seminar - Tunable Spin-Orbit Coupling Effect in Emergent 2D Materials

Heavy electronic two-dimensional (2D) crystals provide unprecedented opportunities for fundamental studies and technological innovations by effectively modulating the inherent spin-obit coupling (SOC) parameter in the 2D limit. In this talk, I will illustrate the highly tunable SOC effect in emergent 2D crystals beyond the bulk paradigm with examples. In particular, I will show that centrosymmetric 2D crystal are superb material platforms for exploring unconventional SOC physics by breaking structural inversion symmetry via external electrostatic gating, best exemplified by the findings of spin-valley flavoured Rashba effect and quantum Hall stripe phases in black arsenic electronic gases; we are also able to activate and manipulate SOC parameters in the 2D limit by SOC scattering, which produces ultra-tunable spin Aharonov-Anandan geometric phases in quantum tunnelling through antiferromagnetic CrPS₄ junctions; I will also briefly discuss some new perspectives on tunable spin-orbit-lattice coupling in the 2D limit, which showcase the great promises of studying heavy electronic 2D systems.