870 citations · 2.5k across the 23 of their papers we have counts for
23 papers
Noise probing of topological band gaps in dispersionless quantum states
Alexander Kruchkov, Shinsei Ryu
We uncover a useful connection between the integrated current noise and the topological band gap in dispersionless quantum states, $\int d ω[ \mathcal S^{\text{flat}}_{xx} +…
Unconventional superfluidity and quantum geometry of topological bosons
Ilya Lukin, Andrii Sotnikov, Alexander Kruchkov
We investigate superfluidity of bosons in gapped topological bands and discover a new phase that has no counterparts in the previous literature. This phase is characterized by a hi…
Anomalous conductivity of -symmetric Fermi liquids
Alexander Kruchkov
We consider a non-Hermitian yet -symmetric Fermi liquid (-FL) in external electric fields. Due to -symmetry, the system exhibits real spec…
Quantum transport in dispersionless electronic bands
Alexander Kruchkov
Flat electronic bands are counterintuitive: with the electron velocity vanishing, our conventional notions of quasiparticle transport are no longer valid. We here study the quantum…
Engineering SYK interactions in disordered graphene flakes under realistic experimental conditions
Marta Brzezinska, Yifei Guan, Oleg V. Yazyev +2
We model SYK (Sachdev-Ye-Kitaev) interactions in disordered graphene flakes up to 300 000 atoms (100 nm in diameter) subjected to an out-of-plane magnetic field of 5-20 T…
Re-entrant magic-angle phenomena in twisted bilayer graphene in integer magnetic fluxes
Yifei Guan, Oleg V. Yazyev, Alexander Kruchkov
In this work we address the re-entrance of magic-angle phenomena (band flatness and quantum-geometric transport) in twisted bilayer graphene (TBG) subjected to strong magnetic flux…