Finite-momentum and field-induced pairings in orbital-singlet spin-triplet superconductors
arXiv:2401.12320 · doi:10.1103/PhysRevB.109.214512
Abstract
Finite-momentum pairing in a Pauli-limited spin-singlet superconductor arises from the pair-breaking effects of an external Zeeman field, a mechanism which is not applicable in odd-parity spin-triplet superconductors. However, in multiorbital systems, the relevant bands originating from different orbitals are usually separated in momentum space, implying that orbital-singlet pairing is a natural candidate for a finite-momentum pairing state. We show that finite-momentum pairing arises in even-parity orbital-singlet spin-triplet superconductors via the combination of orbitally-nontrivial kinetic terms and Hund's coupling. The finite-momentum pairing is then suppressed with an increasing spin-orbit coupling, stabilizing a uniform pseudospin-singlet pairing. We also examine the effects of the magnetic field and find field-induced superconductivity at large fields. We apply these findings to the multiorbital superconductor with spin-orbit coupling, SrRuO and show that a finite-momentum pseudospin-singlet state appears between the uniform pairing and normal states. Future directions of inquiry relating to our findings are also discussed.
arXiv comment14 pages, 11 figures, 2 tables
References in corpus (60)
- Strong electronic correlations from Hund's coupling
- Cellular Dynamical Mean Field Approach to Strongly Correlated Systems
- Roton pair density wave and unconventional strong-coupling superconductivity in a topological kagome metal
- The Physics of Pair Density Waves
- Antiferromagnetism and d-wave superconductivity in cuprates: a uster DMFT study
- Detection of a Cooper-Pair Density Wave in BiSrCaCuO
- The coherence-incoherence crossover and the mass-renormalization puzzles in Sr2RuO4
- Strong spin-orbit coupling effects on the Fermi surface of Sr2RuO4 and Sr2RhO4
- Three orbital model for the iron-based superconductors
- Unconventional Superconductivity in UTe2
- High-resolution photoemission on Sr2RuO4 reveals correlation-enhanced effective spin-orbit coupling and dominantly local self-energies
- Theory of the striped superconductor
- Significant enhancement of upper critical fields by doping and strain in Fe-based superconductors
- Response of a Superconductor to a Zeeman Magnetic Field
- Amperean Pairing Instability in the U(1) Spin Liquid State with Fermi Surface and Application to
- Emergent space-time supersymmetry in 3D Weyl and 2D Dirac semimetals
- Discovery of a Cooper-Pair Density Wave State in a Transition-Metal Dichalcogenide
- Coexistence of charge-density-wave and pair-density-wave orders in underdoped cuprates
- Even Parity, Orbital Singlet and Spin Triplet Pairing for Superconducting
- The role of spin-orbit coupling for the superconducting state in Sr_2RuO_4
- Odd-frequency superconducting pairing in multi-band superconductors
- Detection of a Pair Density Wave State in UTe
- Stabilizing Even-Parity Chiral Superconductivity in SrRuO
- Anisotropic upper critical field and a possible Fulde-Ferrel-Larkin-Ovchinnikov state in a stoichiometric pnictide superconductor LiFeAs
- Superconductivity from emerging magnetic moments
- Evidence for an FFLO state with segmented vortices in the BCS-BEC-crossover superconductor FeSe
- Spin-Orbit Coupling and Electronic Correlations in Sr2RuO4
- Discovery of a pair density wave state in a monolayer high-Tc iron-based superconductor
- Strongly correlated materials from a numerical renormalization group perspective: How the Fermi-liquid state of SrRuO emerges
- Magnetic-field sensitive charge density wave orders in the superconducting phase of UTe2
- Electronic orders in multi-orbital Hubbard models with lifted orbital degeneracy
- Smectic Pair Density Wave Order in EuRbFe4As4
- Hund interaction, spin-orbit coupling and the mechanism of superconductivity in strongly hole-doped iron pnictides
- Superconducting order parameter of SrRuO: a microscopic perspective
- Pair-Density-Wave Superconducting States and Electronic Liquid Crystal Phases
- Superconducting Symmetries of SrRuO from First-Principles Electronic Structure
- Identifying spin-triplet pairing in spin-orbit coupled multi-band superconductors
- Odd-frequency superconductivity in SrRuO measured by Kerr rotation
- Spin-triplet s-wave local pairing induced by Hund's rule coupling
- Pairing Theory of Striped Superconductivity
- Spin-triplet superconducting pairing due to local (Hund's rule, Dirac) exchange
- Theory of Valley-Density Wave and Hidden Order in Iron-Pnictides
- Pair density wave order from electron repulsion
- Group-theoretic classification of superconducting states of Strontium Ruthenate
- Shadowed triplet pairings in Hund's metals with spin-orbit coupling
- Pair Density Waves from Local Band Geometry
- Higher angular momentum pairings in interorbital shadowed-triplet superconductors: Application to SrRuO
- Superfluid state of repulsively interacting three-component fermionic atoms in optical lattices
- Superconductivity in Correlated Multi-Orbital Systems with Spin-Orbit Coupling: Coexistence of Even- and Odd-Frequency Pairing and the Case of Strontium Ruthenate
- The Triplet Resonating Valence Bond State and Superconductivity in Hund's Metals
- Hund's coupling stabilized superconductivity in the presence of spin-orbit interactions
- Quasi One Dimensional Pair Density Wave Superconducting State
- Pair density wave facilitated by Bloch quantum geometry in nearly flat band multiorbital superconductors
- Distinct reduction of Knight shift in superconducting state of SrRuO under uniaxial strain
- Pair density wave and reentrant superconducting tendencies originating from valley polarization
- Multiple-q current states in a multicomponent superconducting channel
- Synergy between Hund-driven correlations and boson-mediated Superconductivity
- High magnetic field superconductivity in a two-band superconductor
- Signatures of Hund Metal and finite-frequency nesting in SrRuO Revealed by Electronic Raman Scattering
- Nematic spectral signatures of the Hund's metal