Anisotropy of the Superconducting State in Sr2RuO4

Abstract

Despite intense studies the exact nature of the order parameter in superconducting Sr2RuO4 remains unresolved. We have used small-angle neutron scattering to study the vortex lattice in Sr2RuO4 with the field applied close to the basal plane, taking advantage of the transverse magnetization. We measured the intrinsic superconducting anisotropy between the c axis and the Ru-O basal plane (~60), which greatly exceeds the upper critical field anisotropy (~20). Our result imposes significant constraints on possible models of triplet pairing in Sr2RuO4 and raises questions concerning the direction of the zero spin projection axis.

Main paper: 5 pages, 4 figures. Supplementary material: 3 pages, 2 figures

References in corpus (5)

• Evaluation of Spin-Triplet Superconductivity in Sr2RuO4
• Chiral P-Wave Order in Sr_2RuO_4
• Observation of half-height magnetization steps in Sr2RuO4
• First-Order Superconducting Transition of Sr2RuO4
• Charge and spin collective modes in a quasi-1D model of Sr2RuO4

Cited by in corpus (22)

• Sharp magnetization jump at the first-order superconducting transition in Sr2RuO4
• Specific-heat evidence of the first-order superconducting transition in Sr2RuO4
• Spin Polarization Enhanced by Spin-Triplet Pairing in Sr${}_2$RuO${}_4$ Probed by NMR
• Possible three-dimensional nematic odd-parity superconductivity in Sr${}_2$RuO${}_4$
• Superconducting pairing in Sr${}_2$RuO${}_4$ from weak to intermediate coupling
• Anisotropic spin fluctuations in Sr${}_2$RuO${}_4$: role of spin-orbit coupling and induced strain
• Pauli-paramagnetic effects on mixed state properties in a strongly anisotropic superconductor ---Application to Sr_2_RuO_4_---
• Quasiparticle self-consistent GW calculation of Sr${}_2$RuO${}_4$ and SrRuO${}_3$:
• Constraints on the superconducting state of Sr${}_2$RuO${}_4$ from elastocaloric measurements
• Simultaneous Evidence for Pauli Paramagnetic Effects and Multiband Superconductivity in KFe${}_2$As${}_2$ by Small-Angle Neutron Scattering Studies of the Vortex Lattice
• Anisotropy and multiband superconductivity in Sr2RuO4
• Absence of a large superconductivity-induced gap in magnetic fluctuations of Sr2RuO4
• Violation of Emergent Rotational Symmetry in the Hexagonal Kagome Superconductor CsV3Sb5
• 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--
• Inter-orbital p- and d-wave pairings between $d_{xz/yz}$ and $d_{xy}$ orbitals in Sr${}_2$RuO${}_4$
• Eilenberger theory and London theory for transverse components of flux line lattice form factors in uniaxial superconductors
• Microscopic Eilenberger theory of Fulde-Ferrell-Larkin-Ovchinnikov states in the presence of vortices
• Quenched metastable vortex states in Sr2RuO4
• Theoretical studies for identifying horizontal line nodes via angle-resolved density of states measurements ---Application to Sr${}_2$RuO${}_4$---
• Investigating the superconducting state of 2$H$-NbS${}_2$ as seen by the vortex lattice
• High-resolution magnetostriction measurements of the Pauli-limited superconductor Sr2RuO4