Large tunable intrinsic gap in rhombohedral-stacked tetralayer graphene

K. Myhro; S. Che; Y. Shi; Y. Lee; K. Thilahar; K. Bleich; Dmitry Smirnov; C. N. Lau

Large tunable intrinsic gap in rhombohedral-stacked tetralayer graphene

Mesoscale and Nanoscale Physics 2018-03-09 v1 Materials Science

Authors: K. Myhro , S. Che , Y. Shi , Y. Lee , K. Thilahar , K. Bleich , Dmitry Smirnov , C. N. Lau

Abstract

In rhombohedral-stacked few-layer graphene, the very flat energy bands near the charge neutrality point are unstable to electronic interactions, giving rise to states with spontaneous broken symmetries. Using transport measurements on suspended rhombohedral-stacked tetralayer graphene, we observe an insulating ground state with a large interaction-induced gap up to 80 meV. This gapped state can be enhanced by a perpendicular magnetic field, and suppressed by an interlayer potential, carrier density, or a critical temperature of ~ 40 K.

Keywords

rhombohedral graphene tetralayer graphene interaction-induced gap insulating ground state transport measurements suspended graphene

Cite

@article{arxiv.1803.03222,
  title  = {Large tunable intrinsic gap in rhombohedral-stacked tetralayer graphene},
  author = {K. Myhro and S. Che and Y. Shi and Y. Lee and K. Thilahar and K. Bleich and Dmitry Smirnov and C. N. Lau},
  journal= {arXiv preprint arXiv:1803.03222},
  year   = {2018}
}

Large tunable intrinsic gap in rhombohedral-stacked tetralayer graphene

Abstract

Keywords

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