Giant Mechanoelectrical Switching in Ferromagnetic Graphene Nanoribbons

ORAL

Abstract

Giant mechanoelectrical effect is observed when twisting a ferromagnetic zigzag-edged graphene nanoribbon (ZGNR) with collinear spin configuration from ab initio quantum transport calculations. The resulting switch ratio is up to 10$^{10}${\%} when the ZGNRs are overturned once and can be even enhanced to over 10$^{14}${\%} via multiply overturnings. We find such a switch equivalent to a spin valve without resort to an external magnetic field. Furthermore, consideration under Noncollinear situation is aslo in progress.

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Authors

  • Hong Li

  • Rui Qin

  • Jing Zhou

  • Qihang Liu

  • Zhengxiang Gao

  • Jing Lu

    • State Key Laboratory of Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871, P. R. China

  • Wai-Ning Mei

  • R.F. Sabirianov

    • Department of Physics, University of Nebraska at Omaha, Omaha, Nebraska 68182-0266, USA