Detailed study of the ac susceptibility of Sr2RuO4 in oriented magnetic fields

Abstract

We have investigated the ac susceptibility of the spin triplet superconductor Sr${}_2$RuO${}_4$ as a function of magnetic field in various directions at temperatures down to 60 mK. We have focused on the in-plane field configuration (polar angle $\theta \simeq 90^{\circ }$), which is a prerequisite for inducing multiple superconducting phases in Sr${}_2$RuO${}_4$. We have found that the previous attribution of a pronounced feature in the ac susceptibility to the second superconducting transition itself is not in accord with recent measurements of the thermal conductivity or of the specific heat. We propose that the pronounced feature is a consequence of additional involvement of vortex pinning originating from the second superconducting transition.

Accepted for publication in Phys. Rev. B

References in corpus (2)

• Superconducting Gap Structure of Spin-Triplet Superconductor Sr_2RuO_4 Studied by Thermal Conductivity
• Anisotropy of magnetothermal conductivity in Sr2RuO4

Cited by in corpus (21)

• Evaluation of Spin-Triplet Superconductivity in Sr2RuO4
• Gap Structure of the Spin-Triplet Superconductor Sr2RuO4 Determined from the Field-Orientation Dependence of Specific Heat
• Determination of the Superconducting Gap Structure in All Bands of the Spin-Triplet Superconductor Sr2RuO4
• Momentum Resolved Superconducting Energy Gaps of Sr${}_2$RuO${}_4$ from Quasiparticle Interference Imaging
• Searching for gap zeros in Sr2RuO4 via field-angle-dependent specific-heat measurement
• Micron-scale measurements of low anisotropic strain response of local $T_c$ in Sr${}_2$RuO${}_4$
• Angular dependence of the upper critical field of Sr2RuO4
• Interface superconductivity in the eutectic Sr2RuO4-Ru: 3-K phase of Sr2RuO4
• Higher-Tc Superconducting Phase in Sr2RuO4 Induced by In-Plane Uniaxial Pressure
• Field-Orientation Dependent Heat Capacity Measurements at Low Temperatures with a Vector Magnet System
• Sr_2 Ru O_4 : Broken Time-Reversal Symmetry in the Superconducting state
• Constraints on the superconducting state of Sr${}_2$RuO${}_4$ from elastocaloric measurements
• Low temperature electronic properties of Sr_2RuO_4 II: Superconductivity
• Influence of gap structures to specific heat in oriented magnetic fields: Application to the orbital dependent superconductor, Sr${}_2$RuO${}_4$
• Excess current in superconducting Sr${}_2$RuO${}_4$
• Inter-orbital p- and d-wave pairings between $d_{xz/yz}$ and $d_{xy}$ orbitals in Sr${}_2$RuO${}_4$
• Low temperature electronic properties of Sr_2RuO_4 I: Microscopic model and normal state properties
• Effect of strain inhomogeneity on a chiral p-wave superconductor
• Quenched metastable vortex states in Sr2RuO4
• Low temperature electronic properties of Sr_2RuO_4 III: Magnetic fields
• High-resolution magnetostriction measurements of the Pauli-limited superconductor Sr2RuO4