Anomalous Transport through the p-Wave Superconducting Channel in the 3-K Phase of Sr2RuO4
H. Kambara, S. Kashiwaya, H. Yaguchi, Y. Asano, Y. Tanaka, and Y., Maeno
TL;DR
This study investigates the anomalous transport properties of the p-wave superconducting channels in Sr2RuO4-Ru systems, revealing evidence of odd-parity superconductivity and chiral-domain-wall dynamics at low temperatures.
Contribution
It provides direct experimental confirmation of odd-parity p-wave superconductivity and uncovers hysteresis linked to chiral-domain-wall motion in the 3-K phase of Sr2RuO4.
Findings
Confirmation of odd-parity superconductivity in the 3-K phase.
Observation of hysteresis in differential resistance-current characteristics.
Evidence suggesting current-induced chiral-domain-wall motion.
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.
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