[MoB4] Novel vdW Heterostructures

5:00 PM - 5:15 PM JST(8:00 AM - 8:15 AM UTC)

[MoB4-02] Direct probing of spin splitting in WSe₂-proximitized graphene via momentum-conserving resonant tunneling

〇Jimpei Kawase¹, Yuta Seo¹, Rai Moriya¹, Kenji Watanabe², Takashi Taniguchi², Tomoki Machida¹ (1. IIS, Univ. of Tokyo (Japan), 2. NIMS (Japan))

We investigate proximity-induced spin–orbit coupling in graphene using a WSe₂/graphene/hBN/graphene tunnel junction. Momentum-conserving resonant tunneling between proximitized and pristine graphene produces doubly split conductance peaks, from which we reconstruct the spin-split Dirac bands. The extracted spin splitting is ΔE = 16.7 ± 0.8 meV at a 15° twist angle between graphene and WSe₂, providing a direct spectroscopic measure of proximity-induced SOC without relying on transport models.