6 papers
Light-Cone Friedel Oscillations: a Window into van Hove Superconductivity
Archisman Panigrahi, Vladislav Poliakov, Leonid Levitov
Van Hove (vH) singularities can enhance superconductivity by generating a large pairing susceptibility. Yet, it remains challenging to experimentally establish whether pairing real…
Imaging phase winding in topological superconductors with a fork-tip Josephson STM
Vladislav Poliakov, Archisman Panigrahi
The complex phase winding in a topological superconductor remains challenging to access by conventional real-space probes. We propose a scheme to probe this winding with a fork-tip…
Particle-Hole Ghost Interference in Superconductors
Archisman Panigrahi, Vladislav Poliakov, Leonid Levitov
Mirror-assisted optical interference can improve the fidelity of Young's double-slit interference. Here we discuss an electron analogue: particle-hole interference in superconducto…
Tomographic imaging of superconducting order using particle-hole interference
Archisman Panigrahi, Vladislav Poliakov, Leonid Levitov
Superconducting phases with exotic symmetries that differ from the underlying crystalline lattice are at the focus of superconductivity research. Yet, despite intense interest, det…
Spin chirality and fermion stirring in topological bands
Archisman Panigrahi, Vladislav Poliakov, Zhiyu Dong +1
We demonstrate that in metals, both normal and superconducting, orbital currents present in the ground state when time reversal symmetry (TRS) is broken, generate spin chirality. N…
Topological transitions in the Yao-Lee spin-orbital model and effects of site disorder
Vladislav Poliakov, Wen-Han Kao, Natalia B. Perkins
The Yao-Lee model is an example of exactly solvable spin-orbital models that are generalizations of the original Kitaev honeycomb model with extra local orbital degrees of freedom.…