Effects of intercomponent couplings on the appearance of time-reversal symmetry breaking fermion quadrupling state in two-component London models

Abstract

A detection of bosonic metallic state that breaks the $Z_2$ time-reversal symmetry has been recently reported in Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$ with a doping level $x\approx 0.8$. This is a metallic state of fermionic quadruplets that breaks time-reversal symmetry. As such, it has no condensate of Cooper pairs but has a long-range order between fermionic quartets. In the present manuscript, we investigate the emergence of this phase in a two-component London model via Monte Carlo simulations as a function of various intercomponent couplings.

References in corpus (44)

• Counterflow Superfluidity of Two-Species Ultracold Atoms in a Commensurate Optical Lattice
• A superconductor to superfluid phase transition in liquid metallic hydrogen
• Vortices with fractional flux in two-gap superconductors and in extended Faddeev model
• Charge $4e$ superconductivity from pair density wave order in certain high temperature superconductors
• Hidden symmetry and knot solitons in a charged two-condensate Bose system
• Dislocations and vortices in pair density wave superconductors
• Three-band superconductivity and the order parameter that breaks time-reversal symmetry
• Commensurate Two-Component Bosons in Optical Lattice: Groundstate Phase Diagram
• Pairing State with a time-reversal symmetry breaking in FeAs based superconductors
• s+is State with Broken Time Reversal Symmetry in Fe-Based Superconductors
• Split superconducting and time-reversal symmetry-breaking transitions, and magnetic order in Sr${}_2$RuO${}_4$ under uniaxial stress
• Vortex lattice structures of Sr${}_2$RuO${}_4$
• Topological solitons in three-band superconductors with broken time reversal symmetry
• A proposal for reconciling diverse experiments on the superconducting state in Sr2RuO4
• Deconfined criticality, runaway flow in the two-component scalar electrodynamics and weak first-order superfluid-solid transitions
• Chiral CP^2 skyrmions in three-band superconductors
• Quartic metal: Spontaneous breaking of time-reversal symmetry due to four-fermion correlations in Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$
• Emerging superconductivity with broken time reversal symmetry inside a superconducting $s$-wave state
• Length scales, collective modes, and type-1.5 regimes in three-band superconductors
• Broken time-reversal symmetry in Josephson junction involving two-band superconductors
• Field- and temperature induced topological phase transitions in the three-dimensional $N$-component London superconductor
• Domain walls and their experimental signatures in s+is superconductors
• Phase transitions in a three dimensional $U(1)\times U(1)$ lattice London superconductor: Metallic superfluid and charge-4e superconducting states
• Time reversal symmetry breakdown in normal and superconducting states in frustrated three-band systems
• Superconductivity with broken time reversal symmetry in ion irradiated Ba${}_{0.27}$K${}_{0.73}$Fe${}_2$As${}_2$ single crystals
• $Z_3$-vestigial nematic order due to superconducting fluctuations in the doped topological insulator Nb${}_x$Bi${}_2$Se${}_3$ and Cu${}_x$Bi${}_2$Se${}_3$
• Unsplit superconducting and time reversal symmetry breaking transitions in Sr${}_2$RuO${}_4$ under hydrostatic pressure and disorder
• Phase transitions and anomalous normal state in superconductors with broken time reversal symmetry
• s+is superconductivity with incipient bands: doping dependence and STM signatures
• Microscopically derived multi-component Ginzburg-Landau theories for $s+is$ superconducting state
• Phase structure and phase transitions in a three dimensional SU(2) superconductor
• Preemptive vortex-loop proliferation in multicomponent interacting Bose--Einstein condensates
• Superfluid drag in the two-component Bose-Hubbard model
• Properties of dirty two-bands superconductors with repulsive interband interaction: normal modes, length scales, vortices and magnetic response
• Fluctuation and strain effects in a chiral $p$-wave superconductor
• Observation of a metallic superfluid in a numerical experiment
• Phase diagram of dirty two-band superconductors and observability of impurity-induced $s+is$ state
• Polarization of spontaneous magnetic field and magnetic fluctuations in $s+is$ anisotropic multiband superconductors
• Borromean supercounterfluidity
• Spontaneous Breakdown of Time-Reversal Symmetry Induced by Thermal Fluctuations
• Superfluid Drag in Multicomponent Bose-Einstein Condensates on a Square Optical Lattice
• Berezinskii-Kosterlitz-Thouless transition transport in spin-triplet superconductor
• First order superconducting phase transition in chiral $p+ip$ system
• Theory of Hofstadter Superconductors

Cited by in corpus (10)

• Weak-Coupling Theory of Pair Density-Wave Instabilities in Transition Metal Dichalcogenides
• Calorimetric evidence for two phase transitions in Ba${}_{1-\mathrm{x}}$K${}_{\mathrm{x}}$Fe${}_2$As${}_2$ with fermion pairing and quadrupling states
• Prediction of time-reversal-symmetry breaking fermionic quadrupling condensate in twisted bilayer graphene
• Charge-4$e$ Superconductivity in a Hubbard model
• Cooper quartets in interacting hybrid superconducting systems
• Exactly Solvable Model of Randomly Coupled Twisted Superconducting Bilayers
• Microscopic theory of electron quadrupling condensates
• Ultrasound evidence for multicomponent superconducting order parameter in Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$ with electron quadrupling phase
• Microscopic properties of fractional vortices and domain walls in three-band $s+is$ superconductors
• Revisiting vestigial order in nematic superconductors: gauge-field mechanisms and model constraints