Influence of hydrostatic pressure on the magnetic phase diagram of superconducting Sr2RuO4 by ultrasonic attenuation
O. Svitelskiy, S. Headley, S. W. Tozer, E. C. Palm, T. P. Murphy, D. Shulyatev, A. V. Suslov
DOI 10.1103/PhysRevB.77.052502 · Physical Review B
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
The effect of high hydrostatic pressure on the magnetic field and temperature dependence of the attenuation of a longitudinal ultrasonic wave propagated along the ⟨100⟩ direction in superconducting Sr2RuO4 has been investigated. The magnetic field dependence of the attenuation suggests the vertical character of the nodes in the superconducting gap. Application of pressure causes a decrease of the critical temperature Tc and critical magnetic field Hc2; the width of the transition under pressure increases. The dependence of Hc2∥ab on Tc was found to be linear, in contrast to the quadratic one for Hc2∥c. The slope dHc2∥ab∕dTc has a universal character; its value does not depend on the physical factor causing reduction of Tc, regardless if it is pressure or impurities. The observed effects demonstrate that the pressure application induces an increase in the electron-electron interaction. We show that this increase can be described in terms of a changing electron relaxation time, as in the case of impurities.
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. | 1.2 | Pressure unresolved | unknown |
Similar papers
Perturbation theory analysis of the strain-dependent superconducting phase diagram for Sr2RuO4
similarity 0.96J. J. Deisz
Source status unknown — claims are unverified
Pressure dependence of superconducting critical temperature of Sr2RuO4
similarity 0.95Naoki Shirakawa et al.
Source status unknown — claims are unverified
Frequency-dependent superconducting states from the two-time linear response theory: Application to Sr2RuO4
similarity 0.95Olivier Gingras et al.
Source status unknown — claims are unverified
Magnetic excitations in the normal and superconducting states of Sr2RuO4
similarity 0.95F. Servant et al.
Source status unknown — claims are unverified
Anomalous magnetic fluctuations in superconducting Sr2RuO4 revealed by Ru101 nuclear spin-spin relaxation
similarity 0.95Masahiro Manago et al.
Source status unknown — claims are unverified
Enhancement of Superconductivity of Sr2RuO4 to 3 K by Embedded Metallic Microdomains
similarity 0.95Y. Maeno et al.
Source status unknown — claims are unverified