Anomalous Transport through the p-Wave Superconducting Channel in the 3-K Phase of Sr2RuO4
Anomalous Transport through the p-Wave Superconducting Channel in the 3-K Phase of Sr2RuO4
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DOI：
10.1103/physrevlett.101.267003
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发表时间：
2008-12-31
影响因子：
8.6
通讯作者：
Maeno, Yoshiteru
中科院分区：
文献类型：
--
作者：
Kambara, Hiroshi;Kashiwaya, Satoshi;Maeno, Yoshiteru
利用微加工技术，我们提取了Sr2RuO4-Ru共晶体系中3-Kelvin(3-K)相超导电性的各个通道，证实了3-K相中的奇宇称超导电性，类似于纯的Sr2RuO4。在2K以下观察到的微分电阻-电流和电压-电流特性的异常滞后表明了超导态的内部自由度。电滞回线的一个可能来源是由于手征p波态引起的电流诱导的手征磁畴壁运动。
Using microfabrication 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.