Parity Violation in a Single Domain of Spin-Triplet Sr2RuO4 Superconductors
arXiv:0806.2201 · doi:10.1016/j.ssc.2009.04.022
Abstract
We observed an unconventional parity-violating vortex in single domain Sr2RuO4 single crystals using a transport measurement. The current-voltage characteristics of submicron Sr2RuO4 shows that the induced voltage has anomalous components which are even function of the bias current. The results may suggest that the vortex itself has a helical internal structure characterized by a Hopf invariant (a topological invariant). We also discuss that the hydrodynamics of such a helical vortex causes the parity violation to retain the topological invariant.
Accepted for publication in Solid State Communications
References in corpus (4)
- High Resolution Polar Kerr Effect Measurements of Sr2RuO4: Evidence for Broken Time Reversal Symmetry in the Superconducting State
- Stability of half-quantum vorticies in p_x+ip_y superconductors
- Anomalous Transport through the p-Wave Superconducting Channel in the 3-K Phase of Sr2RuO4
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Cited by in corpus (5)
- Chiral charge-density-waves
- Higher-Tc superconducting phase in Sr2RuO4 induced by uniaxial pressure
- Domain wall in a chiral p-wave superconductor: a pathway for electrical current
- Discovery of parity-violating Majorana fermions in a chiral superconductor Sr2RuO4
- Emergence of the Chern structure using SrRuO nanofilms