9 citations · 12 across the 7 of their papers we have counts for
7 papers
Quantized heat flow in the Hofstadter butterfly
Aifei Zhang, Gibril Aissani, Quan Dong +11
When subjected to a strong magnetic field, electrons on a two-dimensional lattice acquire a fractal energy spectrum called Hofstadter's butterfly. In addition to its unique recursi…
Non-ohmic to ohmic crossover in the breakdown of the quantum Hall states in graphene under broadband excitations
Torsten Röper, Aifei Zhang, Kenji Watanabe +4
Graphene, through the coexistence of large cyclotron gaps and small spin and valley gaps, offers the possibility to study the breakdown of the quantum Hall effect across a wide ran…
Breakdown of the Wiedemann-Franz law in an interacting quantum Hall metamaterial
Patrice Roche, Carles Altimiras, François D. Parmentier +1
Coulomb interactions deeply affect quantum transport in simple ballistic systems, but their impact on scaled up ballistic structures remains underexplored. Here we theoretically co…
Non-universal localization transition in the quantum Hall effect probed through broken-symmetry states of graphene
Aifei Zhang, Torsten Röper, Manjari Garg +7
The quantum Hall effect hosts quantum phase transitions in which the localization length, that is the size of disorder-induced bulk localized states, is governed by universal scali…
Ballistic-to-diffusive transition in engineered counter-propagating quantum Hall channels
Aifei Zhang, Kenji Watanabe, Takashi Taniguchi +4
Exotic quantum Hall systems hosting counter-propagating edge states can show seemingly non-universal transport regimes, usually depending on the size of the sample. We experimental…
Enhanced shot noise in graphene quantum point contacts with electrostatic reconstruction
M. Garg, O. Maillet, N. L. Samuelson +13
Shot noise measurements in quantum point contacts are a powerful tool to investigate charge transport in the integer and fractional quantum Hall regime, in particular to unveil the…
Vanishing bulk heat flow in the nu=0 quantum Hall ferromagnet in monolayer graphene
Raphaëlle Delagrange, Manjari Garg, Gaëlle Le Breton +9
Under high perpendicular magnetic field and at low temperatures, graphene develops an insulating state at the charge neutrality point. This state, dubbed , is due to the inter…