Vortex coalescence and type-1.5 superconductivity in Sr2RuO4

Abstract

Recently vortex coalescence was reported in superconducting Sr2RuO4 by several experimental groups for fields applied along the c-axis. We argue that Sr2RuO4 is a type-1.5 superconductor with long-range attractive, short-range repulsive intervortex interaction. The type-1.5 behavior stems from an interplay of the two orbital degrees of freedom describing this chiral superconductor together with the multiband nature of the superconductivity. These multiple degrees of freedom give rise to multiple coherence lengths, some of which are larger and some smaller than the magnetic field penetration length, resulting in nonmonotonic intervortex forces.

To appear in Physical Review B Rapid Communications. Minor additions following referees suggestions; References added. 5 pages, 2 figures

References in corpus (8)

• High Resolution Polar Kerr Effect Measurements of Sr2RuO4: Evidence for Broken Time Reversal Symmetry in the Superconducting State
• Observation of half-height magnetization steps in Sr2RuO4
• Type-1.5 Superconductors
• Hidden quasi one-dimensional superconductivity in Sr${}_2$RuO${}_4$
• Properties of edge states in spin-triplet two-band superconductor
• Suppression of Spontaneous Supercurrents in a Chiral p-Wave Superconductor
• Giant vortices, vortex rings and reentrant behavior in type-1.5 superconductors
• Observation of Vortex Coalescence, Vortex Chains and Crossing Vortices in the Anisotropic Spin-Triplet Superconductor $S{r}_{2}Ru{O}_4$

Cited by in corpus (18)

• Depinning and nonequilibrium dynamic phases of particle assemblies driven over random and ordered substrates: a review
• Muon-spin rotation measurements of the vortex state in Sr${}_2$RuO${}_4$: type-1.5 superconductivity, vortex clustering and a crossover from a triangular to a square vortex lattice
• Vortical versus skyrmionic states in mesoscopic \emph{p}-wave superconductors
• Type-1.5 superconductivity in multicomponent systems
• Hierarchical structure formation in layered superconducting systems with multi-scale inter-vortex interactions
• Leggett modes and multi-band superconductivity in Sr2RuO4
• Skyrmions induced by dissipationless drag in U(1)xU(1) superconductors
• Honeycomb, square, and kagomé vortex lattices in superconducting systems with multi-scale inter-vortex interactions
• Lattices of double-quanta vortices and chirality inversion in $p_x+i{p}_y$ superconductors
• Static and Dynamic Phases for Vortex Matter with Attractive Interactions
• Spin-Triplet Pairing State of Sr2RuO4 in the c-Axis Magnetic Field
• Vortex chains due to nonpairwise interactions and field-induced phase transitions between states with different broken symmetry in superconductors with competing order parameters
• Phase diagrams of vortex matter with multi-scale inter-vortex interactions in layered superconductors
• Nucleation of domain walls by $Z_2$ symmetry breaking transition in $p_x+i{p}_y$ superconductors
• Type-1.5 superconductivity in muliband and other multicomponent systems
• Probing chiral superconductivity in Sr${}_2$RuO${}_4$ underneath the surface by point contact measurements
• Interband interference effects at the edge of a multiband chiral p-wave superconductor
• Three and Four-Body Intervortex Forces in the Ginzburg-Landau Models of Single- and Multicomponent Superconductivity