Anomalous Transport through the p-Wave Superconducting Channel in the 3-K Phase of Sr2RuO4

Abstract

Using micro fabrication techniques, we extracted individual channels of 3-Kelvin (3-K) phase superconductivity in Sr2RuO4-Ru eutectic systems and confirmed odd-parity superconductivity in the 3-K phase, similar to pure Sr2RuO4. Unusual hysteresis in the differential resistance-current and voltage-current characteristics observed below 2 K indicates the internal degrees of freedom of the superconducting state. A possible origin of the hysteresis is current-induced chiral-domain-wall motion due to the chiral p-wave state.

arXiv comment4 pages, 5 figures, accepted for publication in Phys. Rev. Lett

References in corpus (8)

• Real-space observation of current-driven domain wall motion in submicron magnetic wires
• High Resolution Polar Kerr Effect Measurements of Sr2RuO4: Evidence for Broken Time Reversal Symmetry in the Superconducting State
• Observation of Andreev Surface Bound States in the 3-K phase Region of Sr_2RuO_4
• Phenomenological theory of the 3 Kelvin phase in Sr2RuO4
• Switching Dynamics of Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ Intrinsic Josephson junctions: Macroscopic Quantum Tunneling and Self-Heating Effect
• Interface superconductivity in the eutectic Sr2RuO4-Ru: 3-K phase of Sr2RuO4
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• Tunneling properties at the interface between superconducting Sr2RuO4 and a Ru micro-inclusion

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• Time-Reversal Invariant Superconductivity of Sr${}_2$RuO${}_4$ Revealed by Josephson Effects
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