DC-current induced domain wall in a chiral $p$-wave superconductor

Abstract

We study theoretically the impact of an applied DC-current on a mesoscopic chiral $p$-wave superconductor. Performing quasiclassical calculations on a two-dimensional system, with an external magnetic flux to generate a DC current, we show that the current can trigger a transition to a state with a domain wall between regions of different chiralities. The system shows an hysteretic behavior, as different domain wall configurations are possible for a given current. This domain wall creation mechanism can give new insights on recent experiments observing anomalous current variations in Sr${}_2$RuO${}_4$ junctions.

7 pages, 3 figures

References in corpus (17)

• Non-Abelian Anyons and Topological Quantum Computation
• High Resolution Polar Kerr Effect Measurements of Sr2RuO4: Evidence for Broken Time Reversal Symmetry in the Superconducting State
• Chiral Superconductors
• Observation of half-height magnetization steps in Sr2RuO4
• Hidden quasi one-dimensional superconductivity in Sr${}_2$RuO${}_4$
• Vanishing edge currents in non-$p$-wave topological chiral superconductors
• Odd-frequency superconductivity in Sr${}_2$RuO${}_4$ measured by Kerr rotation
• Suppression of spontaneous currents in Sr${}_2$RuO${}_4$ by surface disorder
• Properties of edge states in spin-triplet two-band superconductor
• Suppression of Spontaneous Supercurrents in a Chiral p-Wave Superconductor
• Anomalous Transport through the p-Wave Superconducting Channel in the 3-K Phase of Sr2RuO4
• Spontaneous edge current in a small chiral superconductor with a rough surface
• Anomalous surface states at interfaces in p-wave superconductors
• Influence of the impurity scattering on charge transport in unconventional superconductor junctions
• Multi-component order parameter superconductivity of Sr${}_2$RuO${}_4$ revealed by topological junctions
• Josephson effect in a multi-orbital model for Sr${}_2$RuO${}_4$
• Observability of surface currents in p-wave superconductors