Probing giant Zeeman shift in vanadium-doped <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi mathvariant="normal">W</mml:mi><mml:msub><mml:mi>Se</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math> via resonant magnetotunneling transport
Jinbao Jiang, Lan-Anh Thi Nguyen, Tuan Dung Nguyen, Dinh Hoa Luong, Duk Young Kim, Youngjo Jin, Philip Kim, Dinh Loc Duong⧫, Young Hee Lee
Abstract
Although room-temperature ferromagnetic semiconducting has been demonstrated in V-doped WSe${}_{2}$ monolayer with gate-tunable magnetic domains, there is no direct evidence for their spin-polarized band structure. Here, the authors report finding a giant Zeeman shift (a $g$ factor up to 135) of the spin-polarized band edges of multilayered vanadium-doped WSe${}_{2}$, seen via magnetotunneling current measurement of a graphite/V-WSe${}_{2}$/graphite heterojunction. The direct observation of the spin-polarized band edges of V-WSe${}_{2}$ provides concrete evidence for the diluted ferromagnetic semiconductor of V-doped WSe${}_{2}$.