Multiple superconducting phases in a nearly ferromagnetic system

Abstract

Multiple superconducting order parameters are extremely rare. Here we show that a very small pressure can induce this phenomenon in the recently discovered heavy fermion superconductor UTe2. This nearly ferromagnetic system shows several intriguing phenomena, including an extraordinary reinforcement of superconductivity in very strong magnetic fields. We find that pressure can tune the system to a more correlated state and probable magnetic order. The superconducting critical temperature is strongly enhanced, reaching almost 3K, a new record for Ce- and U-based heavy fermion superconductors. Most spectacularly under pressure we find a transition within the superconducting state, putting UTe2 among the very rare systems having multiple superconducting phases. UTe2 under pressure is a treasure trove of several of the most fascinating phenomena in unconventional superconductivity and may well be a keystone in their understanding.

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Cited by in corpus (96)

• Unconventional Superconductivity in UTe2
• Evidence for a pressure-induced antiferromagnetic quantum critical point in intermediate valence UTe2
• Multiple Superconducting Phases and Unusual Enhancement of the Upper Critical Field in UTe2
• Low energy band structure and symmetries of UTe2 from angle resolved photoemission spectroscopy
• Single-component superconducting state in UTe2 at 2 K
• 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
• Low-dimensional antiferromagnetic fluctuations in the heavy-fermion paramagnetic ladder UTe${}_2$
• Enhanced spin triplet superconductivity due to Kondo destabilization
• Large Reduction in the $a$-axis Knight Shift on UTe${}_2$ with $T_{\mathrm{c}}$ = 2.1 K
• Superconducting order parameter in UTe${}_2$ determined by Knight shift measurement
• Field-induced tuning of the pairing state in a superconductor
• Anisotropic response of spin susceptibility in the superconducting state of UTe${}_2$ probed with ${}^{125}$Te-NMR measurement
• Chiral superconductivity in UTe2 probed by anisotropic low-energy excitations
• Spatially inhomogeneous superconductivity in UTe2
• Orientation of point nodes and nonunitary triplet pairing tuned by the easy-axis magnetization in UTe2
• Topological crystalline superconductivity in locally noncentrosymmetric CeRh${}_2$As${}_2$
• Comparison of two superconducting phases induced by a magnetic field in UTe2
• Anisotropy of the Upper Critical Field in the Heavy-Fermion Superconductor UTe2 under Pressure
• Tuning magnetic confinement of spin-triplet superconductivity
• Single-Component Superconductivity in UTe${}_2$ at Ambient Pressure
• $c$-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
• Magnetic Properties under Pressure in Novel Spin-Triplet Superconductor UTe2
• Field-Induced Superconductivity near the Superconducting Critical Pressure in UTe2
• Anapole superconductivity from $\mathcal{P}\mathcal{T}$-symmetric mixed-parity interband pairing
• Field Induced Multiple Superconducting Phases in UTe2 along Hard Magnetic Axis
• Effect of uranium deficiency on normal and superconducting properties in unconventional superconductor UTe${}_2$
• Nonreciprocal optical response in parity-breaking superconductors
• Inhomogeneous Superconducting State Probed by ${}^{125}$Te NMR on UTe$_2
• Slow Electronic Dynamics in the Paramagnetic State of UTe${}_2$
• Discovery of magnetic phase transitions in heavy-fermion superconductor CeRh${}_2$As${}_2$
• Decoupling multi-phase superconductivity from normal state ordering in CeRh${}_2$As${}_2$
• Anisotropic magnetotransport properties of the heavy-fermion superconductor CeRh${}_2$As${}_2$
• Quantum-geometry-induced anapole superconductivity
• Superconducting-Spin Reorientation in Spin-Triplet Multiple Superconducting Phases of UTe2
• Theory of spin-polarized superconductors -- an analogue of superfluid ${}^3$He A-phase
• Feedback of superconductivity on the magnetic excitation spectrum of UTe${}_2$
• Enhancement and Discontinuity of Effective Mass through the First-Order Metamagnetic Transition in UTe${}_2$
• Heat capacity double transitions in time-reversal symmetry broken superconductors
• Field-induced compensation of magnetic exchange as the possible origin of reentrant superconductivity in UTe${}_2$
• Expansion of the high field-boosted superconductivity in UTe2 under pressure
• Ubiquitous Spin Freezing in the Superconducting State of UTe2
• Non-unitary triplet superconductivity tuned by field-controlled magnetization --URhGe, UCoGe and UTe${}_2$--
• Thermodynamic signatures of short-range magnetic correlations in UTe${}_2$
• Possible Coexistence of Antiferromagnetic and Ferromagnetic Spin Fluctuations in the Spin-triplet Superconductor UTe2 Revealed by 125Te NMR under Pressure
• Longitudinal spin fluctuations driving field-reinforced superconductivity in UTe${}_2$
• Magnetic reshuffling and feedback on superconductivity in UTe2 under pressure
• Thermodynamic and electrical transport properties of UTe${}_2$ under uniaxial stress
• Pressure-induced structural phase transition and new superconducting phase in UTe2
• Advances in actinide thin films: synthesis, properties, and future directions
• Molten Salt Flux Liquid Transport Method for Ultra Clean Single Crystals UTe2
• Nonunitary Superconductivity in Complex Quantum Materials
• Pairing symmetries of multiple superconducting phases in UTe2: Competition between ferromagnetic and antiferromagnetic fluctuations
• Nonreciprocal Meissner response in parity-mixed superconductors
• Magnetovolume Effect on the First-Order Metamagnetic Transition in UTe${}_2$
• Piezoelectric effect and diode effect in anapole and monopole superconductors
• Anomalous vortex dynamics in spin-triplet superconductor UTe${}_2$
• Anisotropic signatures of the electronic correlations in the electrical resistivity of UTe${}_2$
• Superconducting piezoelectric effect
• Multiple superconducting phases in heavy-fermion metals
• Drastic change in magnetic anisotropy of UTe2 under pressure revealed by 125Te-NMR
• Metastable phase of UTe${}_2$ formed under high pressure above 5 GPa
• Resonant Ultrasound Spectroscopy for Irregularly-Shaped Samples and its Application to Uranium Ditelluride
• Absence of a Bulk Thermodynamic Phase Transition to a Density Wave Phase in UTe2
• Low-temperature Magnetic Fluctuations Investigated by ${}^{125}$Te-NMR on the Uranium-based Superconductor UTe${}_2$
• Notes on multiple superconducting phases in UTe${}_2$ ---Third transition---
• c axis electrical transport at the metamagnetic transition in the heavy-fermion superconductor UTe2 under pressure
• Clear Reduction in Spin Susceptibility and Superconducting Spin Rotation for $H\parallel a$ in the Early-Stage Sample of Spin-Triplet Superconductor UTe${}_2$
• Anisotropic Enhancement of Lower Critical Field in Ultraclean Crystals of Spin-Triplet Superconductor UTe2
• A quantum critical line bounds the high field metamagnetic transition surface in UTe${}_2$
• Incommensurate antiferromagnetism in UTe2 under pressure
• Quasi-uniaxial pressure induced superconductivity in stoichiometric compound UTe${}_2$
• Anisotropic paramagnetic response of topological Majorana surface states in the superconductor ${\text{UTe}}_2$
• Unconventional $s$-Wave Pairing with Point-Node-Like Gap Structure in UTe${}_2$
• Hydrostatic pressure studies on non-superconducting UTe2
• Intrinsic low-temperature magnetic properties on the ultra-clean UTe${}_2$ with $T_{\mathrm{c}}$ = 2.1 K revealed by ${}^{125}$Te NMR
• The phase diagram of CeRh${}_2$As${}_2$ for out-of-plane magnetic field
• Finite temperature effects in quantum systems with competing scalar orders
• Pair-Kondo effect: a mechanism for time-reversal broken superconductivity in UTe${}_2$
• Majorana multipole response with magnetic point group symmetry
• Magnetic signatures of pressure-induced multicomponent superconductivity in UTe${}_2$
• Self-reconstruction of order parameter in spin-triplet superconductor UTe${}_2$
• Higher-order topological phases for time-reversal-symmetry breaking superconductivity in UTe${}_2$
• Reciprocal and nonreciprocal paraconductivity in bilayer multiphase superconductors
• Two-dimensional flat band on the (011) surface of UTe${}_2$: Implication for STM measurements with a superconducting tip
• $b$-axis and $c$-axis Knight shift measurements in the superconducting state on ultraclean UTe${}_2$ with $T_c$ = 2.1 K
• Metamagnetism in the high-pressure tetragonal phase of UTe${}_2$
• Magnetic fluctuations and anisotropy in UTe2: a multi-orbital study based on GGA+U and RPA
• Pauli 'unlimited': magnetic field induced-superconductivity in UTe${}_2$
• Boosted magnetic fluctuations at the onset of superconductivity in UTe${}_2$ beyond 40 T
• Spin-lattice relaxation for point-node-like s-wave superconductivity in f-electron systems
• Electronic structure of UTe${}_2$ under pressure
• Exotic magnetic phase diagram and extremely robust antiferromagnetism in Ce${}_2$RhIn${}_8$