Josephson-frustrated superconductors in a magnetic field
arXiv:1410.2021 · doi:10.1103/PhysRevB.90.134512
Abstract
We study the effect of an externally imposed rotation or magnetic field on frustrated multiband superconductors/superfluids. The frustration originates with multiple superconducting bands crossing the Fermi surface in conjunction with interband Josephson-couplings with a positive sign. These couplings tend to frustrate the phases of the various components of the superconducting order parameter. This in turn leads to an effective description in terms of a $\groupUZ$-symmetric system, where essentially only the $\groupU$-sector couples to the gauge-field representing the rotation or magnetic field. By imposing a large enough net vorticity on the system at low temperatures, one may therefore reveal a resistive vortex liquid state which will feature an unusual additional phase transition in the $\groupZ$-sector. At low enough vorticity there is a corresponding vortex-lattice phase featuring a $\groupZ$ phase transition. We argue that this Ising transition phase should be readily observable in experiments.
arXiv comment8 pages, 7 figures. To appear in Physical Review B
References in corpus (15)
- Density functional study of FeS, FeSe and FeTe: Electronic structure, magnetism, phonons and superconductivity
- Computational Studies of Quantum Spin Systems
- Three-band superconductivity and the order parameter that breaks time-reversal symmetry
- s+is State with Broken Time Reversal Symmetry in Fe-Based Superconductors
- Multiband superconductivity in the heavy fermion compound PrOs4Sb12
- Topological phase-fluctuations, amplitude fluctuations, and criticality in extreme type-II superconductors
- Extreme Type-II Superconductors in a Magnetic Field: A Theory of Critical Fluctuations
- Length scales, collective modes, and type-1.5 regimes in three-band superconductors
- Broken time-reversal symmetry in Josephson junction involving two-band superconductors
- Time reversal symmetry breakdown in normal and superconducting states in frustrated three-band systems
- ARPES studies of the electronic structure of LaOFe(P,As)
- Phase transitions and anomalous normal state in superconductors with broken time reversal symmetry
- Model of collective modes in three-band superconductors with repulsive interband interactions
- Canonical local algorithms for spin systems: Heat Bath and Hasting's methods
- Classification of ground states and normal modes for phase-frustrated multicomponent superconductors