Electrically tunable nonadiabatic quantum spin pumping in zigzag/bearded graphene nanoribbons. - Zhang, Yingran; Yu, Jiaming; Ren, Chongdan; Tian, Hongyu; Xue, Liang; Hu, Jingguo; Wang, Sake (Journal of Vacuum Science & Technology: Part A-Vacuums, Surfaces & Films, 2025)