First-Order Superconducting Transition of Sr2RuO4
Shingo Yonezawa, Tomohiro Kajikawa, Yoshiteru Maeno
DOI 10.1103/PhysRevLett.110.077003 · Physical Review Letters
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
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.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Sr2RuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.45 | Pressure not reported | unknown |
| Sr2RuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.5 | Pressure not reported | unknown |
Similar papers
Magnetic excitations in the normal and superconducting states of Sr2RuO4
similarity 0.96F. Servant et al.
Source status unknown — claims are unverified
Comparison of the normal- and superconducting-state electromagnetic absorption in Sr2RuO4
similarity 0.94G. V. Sudhakar Rao et al.
Source status unknown — claims are unverified
Spin-triplet superconductivity in Sr2RuO4 due to orbital and spin fluctuations: Analyses by two-dimensional renormalization group theory and self-consistent vertex-correction method
similarity 0.94Masahisa Tsuchiizu et al.
Source status unknown — claims are unverified
Heat capacity double transitions in time-reversal symmetry broken superconductors
similarity 0.94Henrik S. Røising et al.
Source status unknown — claims are unverified
Effects of strain in multiorbital superconductors: The case of Sr2RuO4
similarity 0.94Sophie Beck et al.
Source status unknown — claims are unverified
Absence of a Large Superconductivity-Induced Gap in Magnetic Fluctuations of Sr2RuO4
similarity 0.94S. Kunkemöller et al.
Source status unknown — claims are unverified