Stacking-order dependent transport properties of trilayer graphene
Stacking-order dependent transport properties of trilayer graphene
Jhang, S. H.; Craciun, M. F.; Schmidmeier, S.; Tokumitsu, S.; Russo, S.; Yamamoto, M.; Skourski, Y.; Wosnitza, J.; Tarucha, S.; Eroms, J.; Strunk, C.
Abstract
We reportmarkedly different transport properties ofABA- andABC-stacked trilayer graphenes. Our experiments in double-gated trilayer devices provide evidence that a perpendicular electric field opens an energy gap in the ABC trilayer, while it causes the increase of a band overlap in the ABA trilayer. In a perpendicular magnetic field, the ABA trilayer develops quantum Hall plateaus at filling factors of nu = 2,4,6, . . . with a step of Δnu = 2, whereas the inversion-symmetric ABC trilayer exhibits plateaus at nu = 6 and 10 with fourfold spin and valley degeneracy.
Beteiligte Forschungsanlagen
- Hochfeld-Magnetlabor (HLD)
- Physical Review B 84(2011), 161408(R)
Permalink: https://www.hzdr.de/publications/Publ-16178