単層WS₂およびWSe₂におけるバレーゼーマン効果と光誘起スピン偏極

Valley Zeeman Effect and Photoinduced Spin Polarization in Monolayer WS₂ and WSe₂

Abstract: Monolayer WS₂ and WSe₂ exhibit strong spin–orbit coupling and broken inversion symmetry, yielding spin–valley locking and valley Zeeman splitting (lifting of K/K′ valley degeneracy). Circularly polarized excitation thus generates spin-polarized carriers. Such carriers enable spin-selective photocatalysis, driving oxygen evolution and reduction…