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Landauer Formula for a Superconducting Quantum Point Contact
Sergey S. Pershoguba, Thomas Veness, Leonid I. Glazman
We generalize the Landauer formula to describe the dissipative electron transport through a superconducting point contact. The finite-temperature, linear-in-bias, dissipative DC co…
Odd-frequency Pairing in Conventional Josephson Junctions
Alexander V. Balatsky, Sergey S. Pershoguba, Christopher Triola
Using a simple theoretical model, we demonstrate the emergence of odd-frequency pair amplitudes in conventional Josephson junctions both in the absence of a voltage (DC effect) and…
Skyrmion-induced bound states in a superconductor
Sergey S. Pershoguba, Sho Nakosai, Alexander V. Balatsky
We consider a superconductor proximity coupled to a two-dimensional ferromagnetic film with a skyrmion texture. Using the T-matrix calculations and numerical modeling we calculate…
Spin-polarized edge currents and Majorana fermions in one- and two-dimensional topological superconductors
Kristofer Björnson, Sergey. S. Pershoguba, Alexander. V. Balatsky +1
We investigate the persistent currents, spin-polarized local density of states, and spectral functions of topological superconductors constructed by placing ferromagnetic impuritie…
Proposed Chiral Texture of the Magnetic Moments of Unit-Cell Loop Currents in the Pseudogap Phase of Cuprate Superconductors
Sergey S. Pershoguba, Kostyantyn Kechedzhi, Victor M. Yakovenko
We propose a novel chiral order parameter to explain the unusual polar Kerr effect in underdoped cuprates. It is based on the loop-current model by Varma, which is characterized by…