Topological band and superconductivity in UTe${}_2$

Abstract

UTe${}_2$ has recently been found to be a likely spin-triplet superconductor that exhibits evidence for chiral Majorana edge states. A characteristic structural feature of UTe${}_2$ is inversion-symmetry related pairs of U atoms, forming rungs of ladders. Here we show how each rung's two sublattice degrees of freedom play a key role in understanding the electronic structure and the origin of superconductivity. In particular, we show that DFT+$U$ calculations generically reveal a topological band that originates from a band inversion associated with $5f$ electrons residing on these rung sublattice degrees of freedom. Furthermore, we show that a previously identified strong ferromagnetic interaction within a U-U rung leads to a pseudospin-triplet superconducting state that can account for a non-zero polar Kerr angle, observed magnetic field-temperature phase diagrams, and nodal Weyl fermions. Our analysis may also be relevant for other U-based superconductors.

arXiv comment6 pages, 3 figures

References in corpus (40)

• Topological Insulators with Inversion Symmetry
• A Common Thread: the pairing interaction for the unconventional superconductors
• Spontaneously polarized half-gapped superconductivity
• Wannier representation of Z_2 topological insulators
• Microscopic evidence for a chiral superconducting order parameter in the heavy fermion superconductor UTe2
• Unconventional Superconductivity in Heavy Fermion UTe2
• Extreme magnetic field-boosted superconductivity
• Review of U-based Ferromagnetic Superconductors: Comparison between UGe2, URhGe, and UCoGe
• Majorana Fermions and Exotic Surface Andreev Bound States in Topological Superconductors: Application to CuxBi2Se3
• Multiple superconducting phases in a nearly ferromagnetic system
• Bogoliubov Fermi surfaces: General theory, magnetic order, and topology
• Coexistence of ferromagnetic fluctuations and superconductivity in the actinide superconductor UTe2
• Metamagnetic Transition in Heavy Fermion Superconductor UTe2
• Insulator-metal transition and topological superconductivity in UTe2 from a first-principles calculation
• Evidence for a pressure-induced antiferromagnetic quantum critical point in intermediate valence UTe2
• Point Node Gap Structure of Spin-Triplet Superconductor UTe2
• Multiple Superconducting Phases and Unusual Enhancement of the Upper Critical Field in UTe2
• Superconducting Properties of Heavy Fermion UTe${}_2$ Revealed by ${}^{125}$Te-Nuclear Magnetic Resonance
• Quasi-two-dimensional Fermi surfaces and unitary spin-triplet pairing in the heavy fermion superconductor UTe${}_2$
• Low energy band structure and symmetries of UTe2 from angle resolved photoemission spectroscopy
• 125Te-NMR Study on a Single Crystal of Heavy Fermion Superconductor UTe2
• Identifying detrimental effects for multi-orbital superconductivity - Application to Sr${}_2$RuO${}_4$
• Intrinsic Hall effect in a multiband chiral superconductor in the absence of an external magnetic field
• Enhanced spin triplet superconductivity due to Kondo destabilization
• Tailoring $T_c$ by symmetry principles: The concept of Superconducting Fitness
• Magnetic-Field-Induced Phenomena in the Paramagnetic Superconductor UTe${}_2$
• Orientation of point nodes and nonunitary triplet pairing tuned by the easy-axis magnetization in UTe2
• Anisotropy of the Upper Critical Field in the Heavy-Fermion Superconductor UTe2 under Pressure
• Electronic Structure of UTe${}_2$ Studied by Photoelectron Spectroscopy
• Tuning magnetic confinement of spin-triplet superconductivity
• Thermodynamic Investigation of Metamagnetism in Pulsed High Magnetic Fields on Heavy Fermion Superconductor UTe${}_2$
• Spin-Orbit Coupling Induced Degeneracy in the Anisotropic Unconventional Superconductor UTe${}_2$
• Fermi-Surface Instabilities in the Heavy-Fermion Superconductor UTe2
• Loop currents and anomalous Hall effect from time-reversal symmetry-breaking superconductivity on the honeycomb lattice
• Theory of spin-polarized superconductors -- an analogue of superfluid ${}^3$He A-phase
• Weyl Superconductivity in UTe2
• Reentrant superconductivity in UTe${}_2$
• Magnetooptical sum rules close to the Mott transition
• Stability of a Nonunitary Triplet Pairing on the Border of Magnetism in UTe${}_2$
• Time-Reversal Symmetry and the Structure of Superconducting Order Parameter of Nearly Ferromagnetic Spin-Triplet Superconductor UTe2

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