7 papers
Trial wavefunction for fractional quantum spin Hall insulators
Omri Lesser, Chao-Ming Jian
Fermions with opposite spins occupying half-filled conjugate Chern bands exhibit interaction physics distinct from their multi-component Landau-level counterparts with the same chi…
Charting the emergent low-dimensional manifold of quantum materials
Jason Z. Kim, Omri Lesser, Debanjan Chowdhury
The periodic table of elements transformed chemistry by revealing simple organizing principles underlying atomic behavior. Despite decades of effort, no analogous framework has eme…
Gaplessness from disorder and quantum geometry in gapped superconductors
Omri Lesser, Sagnik Banerjee, Xuepeng Wang +3
It is well known that disorder can induce low-energy Andreev bound states in a sign-changing, but fully gapped, superconductor at junctions. Generically, these excitations are…
Current Flow in Topological Insulator Josephson Junctions due to Imperfections
Kiryl Piasotski, Omri Lesser, Adrian Reich +5
Recent experiments on planar superconductor-topological insulator-superconductor (S-TI-S) junctions, e.g., in Corbino geometry, have reported low-temperature nonzero Josephson curr…
Vortex-parity-controlled diode effect in Corbino topological Josephson junctions
Joon Young Park, Thomas Werkmeister, Jonathan Zauberman +11
Nonreciprocal supercurrents in Josephson junctions have recently emerged as a sensitive tool for investigating broken symmetries in superconducting quantum materials. Here, we repo…
Theory of reentrant superconductivity in Corbino Josephson junctions
Omri Lesser, Joon Young Park, Yuval Ronen +3
Josephson junctions made of conventional superconductors display Fraunhofer-like oscillations of the critical current as a function of the threaded magnetic flux. When the supercon…