First-Order Superconducting Transition of Sr2RuO4

Abstract

By means of the magnetocaloric effect, we examine the nature of the superconducting-normal (S-N) transition of Sr2RuO4, a most promising candidate for a spin-triplet superconductor. We provide thermodynamic evidence that the S-N transition of this oxide is of first order below approximately 0.8 K and only for magnetic field directions very close to the conducting plane, in clear contrast to the ordinary type-II superconductors exhibiting second-order S-N transitions. The entropy release across the transition at 0.2 K is 10% of the normal-state entropy. Our result urges an introduction of a new mechanism to break superconductivity by magnetic field.

arXiv comment13 pages (Main text: 5 pages; Supplemental Material: 8 pages). To be published in Physical Review Letters

References in corpus (19)

• High Resolution Polar Kerr Effect Measurements of Sr2RuO4: Evidence for Broken Time Reversal Symmetry in the Superconducting State
• Fulde-Ferrell-Larkin-Ovchinnikov State in Heavy Fermion Superconductors
• Evaluation of Spin-Triplet Superconductivity in Sr2RuO4
• Observation of half-height magnetization steps in Sr2RuO4
• Calorimetric Evidence for a Fulde-Ferrell-Larkin-Ovchinnikov Superconducting State in the Layered Organic Superconductor κ$-(BEDT-TTF)$_2$Cu(NCS)$_2$
• First order superconducting phase transition in CeCoIn${}_5$
• Strong spin-orbit coupling effects on the Fermi surface of Sr2RuO4 and Sr2RhO4
• A polarized neutron-scattering study of the Cooper-pair moment in Sr2RuO4
• Edge states of Sr${}_2$RuO${}_4$ detected by in-plane tunneling spectroscopy
• Vortex lattice structures of Sr${}_2$RuO${}_4$
• Superconducting Double Transition and the Upper Critical Field Limit of Sr2RuO4 in Parallel Magnetic Fields
• Spin polarization of half-quantum vortex in systems with equal spin pairing
• Angular dependence of the upper critical field of Sr2RuO4
• Interface superconductivity in the eutectic Sr2RuO4-Ru: 3-K phase of Sr2RuO4
• Topological competition of superconductivity in Pb/Ru/Sr_2RuO_4 junctions
• Field-Orientation Dependent Heat Capacity Measurements at Low Temperatures with a Vector Magnet System
• Quasi-classical determination of the in-plane magnetic field phase diagram of superconducting Sr_2RuO_4
• Effects of Fermi surface and superconducting gap structure in the field-rotational experiments: A possible explanation of the cusp-like singularity in YNi${}_2$B${}_2$C
• In-plane magnetic field phase diagram of superconducting Sr2RuO4

Cited by in corpus (73)

• Pronounced drop of ${}^{17}$O NMR Knight shift in superconducting state of Sr${}_2$RuO${}_4$
• Strong Peak in $T_c$ of Sr${}_2$RuO${}_4$ Under Uniaxial Pressure
• Thermodynamic evidence for nematic superconductivity in Cu${}_x$Bi${}_2$Se${}_3$
• Reduction of the ${}^{17}$O Knight shift in the Superconducting State and the Heat-up Effect by NMR Pulses on Sr${}_2$RuO${}_4$
• Nematic superconductivity in doped Bi2Se3 topological superconductors
• Identifying detrimental effects for multi-orbital superconductivity - Application to Sr${}_2$RuO${}_4$
• Evidence for even parity unconventional superconductivity in Sr${}_2$RuO${}_4$
• Superconductivity in Uniquely Strained RuO${}_2$ Films
• Unsplit superconducting and time reversal symmetry breaking transitions in Sr${}_2$RuO${}_4$ under hydrostatic pressure and disorder
• Searching for gap zeros in Sr2RuO4 via field-angle-dependent specific-heat measurement
• Direct penetration of spin-triplet superconductivity into a ferromagnet in Au/SrRuO3/Sr2RuO4 junctions
• Sharp magnetization jump at the first-order superconducting transition in Sr2RuO4
• Improved Single-Crystal Growth of Sr${}_2$RuO${}_4$
• Little-Parks oscillations with half-quantum fluxoid features in Sr2RuO4 micro rings
• Specific-heat evidence of the first-order superconducting transition in Sr2RuO4
• Anisotropy of the Superconducting State in Sr2RuO4
• Theory of Strain-Induced Magnetic Order and Splitting of $T_c$ and $T_{\mathrm{TRSB}}$ in Sr${}_2$RuO${}_4$
• Spin Polarization Enhanced by Spin-Triplet Pairing in Sr${}_2$RuO${}_4$ Probed by NMR
• Superconducting pairing in Sr${}_2$RuO${}_4$ from weak to intermediate coupling
• Higher-Tc Superconducting Phase in Sr2RuO4 Induced by In-Plane Uniaxial Pressure
• Very General Holographic Superconductors and Entanglement Thermodynamics
• Symmetry-based approach to nodal structures: Unification of compatibility relations and gapless point classifications
• Normal state ${}^{17}$O NMR studies of Sr${}_2$RuO${}_4$ under uniaxial stress
• Pauli-paramagnetic effects on mixed state properties in a strongly anisotropic superconductor ---Application to Sr_2_RuO_4_---
• Leggett modes and multi-band superconductivity in Sr2RuO4
• Magnetic ordered structure dependence of magnetic refrigeration efficiency
• Compact AC Susceptometer for Fast Sample Characterization down to 0.1 K
• Multi-component order parameter superconductivity of Sr${}_2$RuO${}_4$ revealed by topological junctions
• Horizontal Line Nodes in Sr2RuO4 Proved by Spin Resonance
• Spin gap and L modulated intensity at the low-energy incommensurate magnetic fluctuations in the superconducting state of Sr2RuO4
• Theory of Pairing Assisted Spin Polarization in Spin-Triplet Equal Spin Pairing: Origin of Extra Magnetization in Sr_2RuO_4 in Superconducting State
• Constraints on the superconducting state of Sr${}_2$RuO${}_4$ from elastocaloric measurements
• A generalized magnetic refrigeration scheme
• Spin-Triplet Pairing State of Sr2RuO4 in the c-Axis Magnetic Field
• Spin-orbit Coupling and Multiple Phases in Spin-triplet Superconductor Sr${}_2$RuO${}_4$
• Generalized Holographic Superconductors with Higher Derivative Couplings
• Anisotropy and multiband superconductivity in Sr2RuO4
• Anomalous Enhancement of Upper Critical Field in Sr2RuO4 Thin Films
• Absence of a large superconductivity-induced gap in magnetic fluctuations of Sr2RuO4
• Simultaneous Evidence for Pauli Paramagnetic Effects and Multiband Superconductivity in KFe${}_2$As${}_2$ by Small-Angle Neutron Scattering Studies of the Vortex Lattice
• Identifying possible pairing states in Sr${}_2$RuO${}_4$ by tunneling spectroscopy
• Holographic phase transitions from higgsed, non abelian charged black holes
• A note on the upper critical field of Sr${}_2$RuO${}_4$ under strain
• Is the anisotropy of the upper critical field of Sr${}_2$RuO${}_4$ consistent with a helical $p$-wave state?
• Absence of ${}^{17}$O Knight-Shift Changes across the First-Order Phase Transition Line in Sr${}_2$RuO${}_4$
• Interplay between effective mass anisotropy and Pauli paramagnetic effects in a multiband superconductor--Application to Sr2RuO4--
• $T_c$ and the elastocaloric effect of Sr${}_2$RuO${}_4$ under $⟨110⟩$ uniaxial stress: no indications of transition splitting
• Separated transport relaxation scales and interband scattering in SrRuO${}_3$, CaRuO${}_3$, and Sr${}_2$RuO${}_4$ thin films
• Field-rotational magnetocaloric effect: A new experimental technique for accurate measurement of the anisotropic magnetic entropy
• Possibility of mixed helical p-wave pairings in Sr${}_2$RuO${}_4$
• Inter-orbital p- and d-wave pairings between $d_{xz/yz}$ and $d_{xy}$ orbitals in Sr${}_2$RuO${}_4$
• Transverse magnetic field and chiral-nonchiral transition in vortex states for nearly B//ab in chiral p-wave superconductors
• Sr${}_2$RuO${}_4$, like doped cuprates and barium bismuthate, is a negative charge-transfer gap even parity superconductor with $\frac{3}{4}$-filled oxygen band
• Enhanced Seebeck coefficient through the magnetic fluctuations in Sr${}_2$Ru${}_{1-x}{M}_x$O${}_4$ ($M=$ Co, Mn)
• A review of some new perspectives on the theory of superconducting Sr${}_2$RuO${}_4$
• Upper Critical Field of Sr${}_2$RuO${}_4$ under In-Plane Uniaxial Pressure
• Observation of superconducting gap spectra of long-range proximity effect in Au/SrTiO${}_3$/SrRuO${}_3$/Sr${}_2$RuO${}_4$ tunnel junctions
• Microscopic Eilenberger theory of Fulde-Ferrell-Larkin-Ovchinnikov states in the presence of vortices
• Anomalous angular dependence of the upper critical induction of orthorhombic ferromagnetic superconductors with completely broken p-wave symmetry
• Characterization of Sr2RuO4 Josephson junctions made of epitaxial films
• A Review of Electronic Transport in Superconducting Sr${}_2$RuO${}_4$ Junctions
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• Theoretical studies for identifying horizontal line nodes via angle-resolved density of states measurements ---Application to Sr${}_2$RuO${}_4$---
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• First-order chiral to non-chiral transition in the angular dependence of the upper critical induction of the Scharnberg-Klemm $p$-wave pair state
• Distinguishing $d_{xz}+i{d}_{yz}$ and $d_{x^2-y^2}$ pairing in $S{r}_{2}Ru{O}_4$ by high magnetic field H-T phase diagrams
• Magnetoelectric coupling and its impact on the multicaloric effect
• A Chiral Triplet Quasi-Two-Dimensional Superconductor in a Parallel Magnetic Field
• High-resolution magnetostriction measurements of the Pauli-limited superconductor Sr2RuO4