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Non-linear transport phenomena in a two-subband system
S. Wiedmann, G. M. Gusev, O. E. Raichev +2
We study non-linear transport phenomena in a high-mobility bilayer system with two closely spaced populated electronic subbands in a perpendicular magnetic field. For a moderate di…
Coexistence of electron and hole transport in graphene
S. Wiedmann, H. J. van Elferen, E. V. Kurganova +8
When sweeping the carrier concentration in monolayer graphene through the charge neutrality point, the experimentally measured Hall resistivity shows a smooth zero crossing. Using…
Probing the surface states in Bi2Se3 using the Shubnikov-de Haas effect
M. Petrushevsky, E. Lahoud, A. Ron +11
Shubnikov-de Haas (SdH) oscillations are observed in Bi2Se3 flakes with high carrier concentration and low bulk mobility. These oscillations probe the protected surface states and…
Microwave-induced Hall resistance in bilayer electron systems
S. Wiedmann, G. M. Gusev, O. E. Raichev +3
The influence of microwave irradiation on dissipative and Hall resistance in high-quality bilayer electron systems is investigated experimentally. We observe a deviation from odd s…
Evidence for zero-differential resistance states in electronic bilayers
G. M. Gusev, S. Wiedmann, O. E. Raichev +2
We observe zero-differential resistance states at low temperatures and moderate direct currents in a bilayer electron system formed by a wide quantum well. Several regions of vanis…