Anderson topological superconductor
Jan Borchmann, Aaron Farrell, T. Pereg-Barnea
DOI 10.1103/PhysRevB.93.125133 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
In this paper we study the phase diagram of a disordered, spin-orbit coupled superconductor with s-wave or d+id-wave pairing symmetry in symmetry class D. We analyze the topological phase transitions by applying three different methods, which include a disorder averaged entanglement entropy, a disorder averaged real-space Chern number, and an evaluation of the momentum space Chern number in a disorder averaged effective model. We find evidence for a disorder-induced topological state. While in the clean limit there is a single phase transition from a trivial phase with a Chern number C=4 to a topological phase with C=1, in the disordered system there is an intermediate phase with C=3. The phase transition from the trivial C=4 phase into the intermediate phase with C=3 is seen in the real-space calculation of the Chern number. In spite of this, this phase transition is not detectable in the entanglement entropy. A second phase transition from the disorder-induced C=3 into the C=1 phase is seen in all three quantities.
Similar papers
Quantized thermal and spin transports of dirty planar topological superconductors
similarity 0.88Sanjib Kumar Das & Bitan Roy · 2023 · arXiv:2308.16908
Source status unknown — claims are unverified
Stability of Disordered Topological Superconducting Phases in Magnet--Superconductor Hybrid Systems
similarity 0.86Eric Mascot et al. · 2019 · arXiv:1905.05923
Source status unknown — claims are unverified
Attractive Hubbard model with disorder and the generalized Anderson theorem
similarity 0.86E. Z. Kuchinskii et al. · 2014 · arXiv:1411.1547
Source status unknown — claims are unverified
Chiral Superconductivity in Periodically Driven Altermagnet/Superconductor Heterostructures
similarity 0.86Xiaolin Wan et al. · 2026 · arXiv:2604.01596
Source status unknown — claims are unverified
Index Theoretic Characterization of d-Wave Superconductors in the Vortex State
similarity 0.85Oskar Vafek & Ashot Melikyan
Source status unknown — claims are unverified
Disorder parameter of dual superconductivity in QCD revisited
similarity 0.85Claudio Bonati et al.
Source status unknown — claims are unverified