8 papers
Quantum Geometric Origin of Hall Viscosity and Nonlocal Hall Conductivity in Lattice Bands
Danyu Shu, Ryotaro Sano, Ai Yamakage +2
We show that Hall viscosity in lattice bands is governed by a band-projected electric quadrupole encoded within the quantum geometry: Berry curvature sets the projected-coordinate…
Gyromagnetic Quantum Friction in Rayleigh Vorticity Baths
Mamoru Matsuo, Ryotaro Sano, Ai Yamakage +2
We identify an intrinsic zero-temperature relaxation channel for near-surface spins gyromagnetically coupled to Rayleigh-wave vorticity. This surface-mode contribution requires no…
Hanbury Brown-Twiss interferometry at the fractional quantum Hall edge
Ryotaro Sano, Fumihiro Murabayashi, Daigo Ichikawa +5
We propose a Hanbury Brown-Twiss interferometer for a fractional quantum Hall edge system, in which quasiparticles tunnel between two co-propagating edge modes. In contras…
Microwave response of fractional quantum Hall droplets with quasiparticle tunneling
Fumihiro Murabayashi, Ryotaro Sano, Flavio Ronetti +5
We theoretically study microwave absorption spectroscopy of fractional quantum Hall droplets in the presence of quasiparticle tunneling across a quantum point contact. This contact…
Charge and Valley Hydrodynamics in the Quantum Hall Regime of Gapped Graphene
Danyu Shu, Hiroshi Funaki, Ai Yamakage +2
We develop a unified viscous hydrodynamics for charge and valley transport in gapped graphene in the quantum Hall regime. We redefine Hall viscosity as a response to static electri…
Superconducting Acoustogalvanic Effect in Twisted Transition Metal Dichalcogenides
Tsugumi Matsumoto, Ryotaro Sano, Youichi Yanase +1
Two-dimensional van der Waals superconductors are attracting much attention owing to their rich phase diagrams including possible unconventional superconductivity. However, they su…