Electronic Structure of UTe${}_2$ Studied by Photoelectron Spectroscopy

Abstract

The electronic structure of the unconventional superconductor UTe${}_2$ was studied by resonant photoelectron spectroscopy (RPES) and angle-resolved photoelectron spectroscopy (ARPES) with soft X-ray synchrotron radiation. The partial $\mathrm{U}5f$ density of states of UTe${}_2$ were imaged by the $\mathrm{U}4d$--$5f$ RPES and it was found that the $\mathrm{U}5f$ state has an itinerant character, but there exists an incoherent peak due to the strong electron correlation effects. Furthermore, an anomalous admixture of the $\mathrm{U}5f$ states into the $\mathrm{Te}5p$ bands was observed at a higher binding energy, which cannot be explained by band structure calculations. On the other hand, the band structure of UTe${}_2$ was obtained by ARPES and its overall band structure were mostly explained by band structure calculations. These results suggest that the $\mathrm{U}5f$ states of UTe${}_2$ have itinerant but strongly-correlated nature with enhanced hybridization with the $\mathrm{Te}5p$ states.

5 pages, 7 figures

References in corpus (5)

• Unconventional Superconductivity in Heavy Fermion UTe2
• Itinerant Nature of U 5f States in Uranium Mononitride UN Revealed by Angle Resolved Photoelectron Spectroscopy
• Electronic structures of ferromagnetic superconductors ${\mathrm{UGe}}_2$ and $\mathrm{UCoGe}$ studied by angle-resolved photoelectron spectroscopy
• Itinerant magnetism in URhGe revealed by angle resolved photoelectron spectroscopy
• Manifestation of electron correlation effect in $\mathrm{U}5f$ states of uranium compounds revealed by $\mathrm{U}4d-5f$ resonant photoemission spectroscopy

Cited by in corpus (38)

• Unconventional Superconductivity in UTe2
• Insulator-metal transition and topological superconductivity in UTe2 from a first-principles calculation
• Superconducting Properties of Heavy Fermion UTe${}_2$ Revealed by ${}^{125}$Te-Nuclear Magnetic Resonance
• Low energy band structure and symmetries of UTe2 from angle resolved photoemission spectroscopy
• Periodic Anderson model for magnetism and superconductivity in UTe2
• Topological band and superconductivity in UTe${}_2$
• First Observation of de Haas-van Alphen Effect and Fermi Surfaces in Unconventional Superconductor UTe2
• Quasi-2D Fermi surface in the anomalous superconductor UTe2
• $c$-axis transport in UTe${}_2$: Evidence of Three Dimensional Conductivity Component
• A review of UTe${}_2$ at high magnetic fields
• Revealing a 3D Fermi Surface Pocket and Electron-Hole Tunneling in UTe${}_2$ with Quantum Oscillations
• Fully gapped pairing state in spin-triplet superconductor UTe${}_2$
• Anapole superconductivity from $\mathcal{P}\mathcal{T}$-symmetric mixed-parity interband pairing
• Fermi-Surface Instabilities in the Heavy-Fermion Superconductor UTe2
• Effect of uranium deficiency on normal and superconducting properties in unconventional superconductor UTe${}_2$
• Evidence of Fermi-Surface Reconstruction at the Metamagnetic Transition of the Strongly Correlated Superconductor UTe2
• UTe${}_2$: a nearly insulating half-filled $j=\frac{5}{2}$ $5f^3$ heavy fermion metal
• Microscopic imaging homogeneous and single phase superfluid density in UTe${}_2$
• Core-Level Photoelectron Spectroscopy Study of UTe${}_2$
• Possible Realization of Topological Crystalline Superconductivity with Time-Reversal Symmetry in UTe2
• Magnetovolume Effect on the First-Order Metamagnetic Transition in UTe${}_2$
• Pair Wavefunction Symmetry in UTe2 from Zero-Energy Surface State Visualization
• Thermodynamic transitions and topology of spin-triplet superconductivity: Application to UTe${}_2$
• c axis electrical transport at the metamagnetic transition in the heavy-fermion superconductor UTe2 under pressure
• Quantifying the U $5f$ covalence and degree of localization in U intermetallics
• Incommensurate antiferromagnetism in UTe2 under pressure
• Intrinsic Anomalous Thermal Hall Effect in the Unconventional Superconductor UTe2
• Quasi-uniaxial pressure induced superconductivity in stoichiometric compound UTe${}_2$
• Unconventional $s$-Wave Pairing with Point-Node-Like Gap Structure in UTe${}_2$
• An optical investigation of the heavy fermion normal state in superconducting UTe${}_2$
• Nodal superconducting gap structure and topological surface states of UTe${}_2$
• UTe${}_2$: a narrow band superconductor
• Quasiparticle interference and spectral function of the UTe${}_2$ superconductive surface band
• Higher-order topological phases for time-reversal-symmetry breaking superconductivity in UTe${}_2$
• Slow magnetic quantum oscillations in the c-axis magnetoresistance of UTe${}_2$
• Nuclear spin relaxation rate of nonunitary Dirac and Weyl superconductors
• Nodal Superconductivity of UTe${}_2$ Probed by Field-Angle-Resolved Specific Heat on a Crystal with $T_{\mathrm{c}}=2.1$ K
• Pauli 'unlimited': magnetic field induced-superconductivity in UTe${}_2$