Time reversal symmetry breakdown in normal and superconducting states in frustrated three-band systems
Troels Arnfred Bojesen, Egor Babaev, Asle Sudbø
DOI 10.1103/PhysRevB.88.220511 · 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
We discuss the phase diagram and phase transitions in U(1)×Z2 three-band superconductors with broken time reversal symmetry. We find that beyond mean-field approximation and for sufficiently strong frustration of interband interactions there appears an unusual metallic state precursory to a superconducting phase transition. In that state, the system is not superconducting. Nonetheless, it features a spontaneously broken Z2 time reversal symmetry. By contrast, for weak frustration of interband coupling the energy of a domain wall between different Z2 states is low and thus fluctuations restore broken time reversal symmetry in the superconducting state at low temperatures.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Ba1-xKxFe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Thermoelectric Signatures of Time-Reversal Symmetry Breaking States in Multiband Superconductors
similarity 0.98Julien Garaud et al.
Source status unknown — claims are unverified
Time-reversal symmetry breaking from lattice dislocations in superconductors
similarity 0.97Clara N. Breiø et al.
Source status unknown — claims are unverified
Phase transitions and anomalous normal state in superconductors with broken time-reversal symmetry
similarity 0.97Troels Arnfred Bojesen et al.
Source status unknown — claims are unverified
Absence of floating phase in superconductors with time-reversal symmetry breaking on any lattice
similarity 0.96Andrew C. Yuan
Source status unknown — claims are unverified
Unconventional thermoelectric effect in superconductors that break time-reversal symmetry
similarity 0.96Mihail Silaev et al.
Source status unknown — claims are unverified
Evolution of the Superconducting State of Fe-Based Compounds with Doping
similarity 0.96S. Maiti et al.
Source status unknown — claims are unverified