Thermoelectric Signatures of Time-Reversal Symmetry Breaking States in Multiband Superconductors

Abstract

We show that superconductors with broken time-reversal symmetry have very specific magnetic and electric responses to inhomogeneous heating. A local heating of such superconductors induces a magnetic field with a profile that is sensitive to the presence of domain walls and crystalline anisotropy of superconducting states. A nonstationary heating process produces an electric field and a charge imbalance in different bands. These effects can be measured and used to distinguish $s+is$ and $s+id$ superconducting states in the candidate materials such as Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$.

13 pages, 7 figures; Videos associated with this manuscript can be found as ancillary files

References in corpus (13)

• Unconventional pairing originating from disconnected Fermi surfaces in superconducting LaFeAsO${}_{1-x}$F${}_x$}
• Observation of Fermi-surface-dependent nodeless superconducting gaps in Ba0.6K0.4Fe2As2
• Magnetism, superconductivity, and pairing symmetry in Fe-based superconductors
• Pairing State with a time-reversal symmetry breaking in FeAs based superconductors
• Surface bound states and spin currents in non-centrosymmetric superconductors
• Quasiparticle Heat Transport in Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$: Evidence for a k-dependent Superconducting Gap without Nodes
• Chiral CP^2 skyrmions in three-band superconductors
• Universality of superconducting gaps in overdoped Ba0.3K0.7Fe2As2 observed by angle-resolved photoemission spectroscopy
• Phase transitions and anomalous normal state in superconductors with broken time reversal symmetry
• Spontaneous currents in a superconductor with s+is symmetry
• Sudden reversal in the pressure dependence of Tc in the iron-based superconductor CsFe2As2: A possible link between inelastic scattering and pairing symmetry
• Unconventional thermoelectric effect in superconductors that break time-reversal symmetry
• Spontaneous Breakdown of Time-Reversal Symmetry Induced by Thermal Fluctuations

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• Emerging superconductivity with broken time reversal symmetry inside a superconducting $s$-wave state
• Distinguishing between $s+id$ and $s+is$ pairing symmetries in multiband superconductors through spontaneous magnetization pattern induced by a defect
• s+is superconductivity with incipient bands: doping dependence and STM signatures
• Type-1.5 superconductivity in multicomponent systems
• Microscopically derived multi-component Ginzburg-Landau theories for $s+is$ superconducting state
• Properties of dirty two-bands superconductors with repulsive interband interaction: normal modes, length scales, vortices and magnetic response
• Anomalous diamagnetic response in multi-band superconductors with time-reversal broken symmetry
• Supercurrents and spontaneous time-reversal symmetry breaking by nonmagnetic disorder in unconventional superconductors
• Non-London electrodynamics in a multiband London model: anisotropy-induced non-localities and multiple magnetic field penetration lengths
• Prediction of time-reversal-symmetry breaking fermionic quadrupling condensate in twisted bilayer graphene
• Spontaneous time-reversal symmetry breaking by disorder in superconductors
• Phase diagram of dirty two-band superconductors and observability of impurity-induced $s+is$ state
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• Effective model and Magnetic Properties of the Resistive Electron Quadrupling State
• Skyrmionic chains and lattices in $s+id$ superconductors
• Magnetic signatures of domain walls in $s+is$ and $s+id$ superconductors: observability and what that can tell us about the superconducting order parameter
• Time-reversal symmetry breaking superconductivity in hole-doped monolayer MoS${}_2$
• Time-reversal symmetry breaking from lattice dislocations in superconductors
• Magnetic field behaviour in $s+is$ and $s+id$ superconductors: twisting of applied and spontaneous fields
• Laser pulse probe of chirality of Cooper pairs
• Spontaneous surface current in multi-component cubic superconductors with time-reversal symmetry breaking
• Ultrasound evidence for multicomponent superconducting order parameter in Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$ with electron quadrupling phase
• Spontaneous edge corner currents in $s+is$ superconductors and time reversal symmetry breaking surface states
• Topological order in higher composites