Odd-parity superconductivity in Sr2RuO4
Odd-parity superconductivity in Sr2RuO4
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DOI：
10.1126/science.1103881
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发表时间：
2004-11-12
期刊：
影响因子：
56.9
通讯作者：
Liu, Y
中科院分区：
文献类型：
--
作者：
Nelson, KD;Mao, ZQ;Liu, Y
对Sr 2 RuO 4进行相敏测量，以明确地建立该材料中的奇宇称配对。在超导体Sr 2 RuO 4单晶上制备的Au_（0.5）In_（0.5）-Sr_2 RuO 4超导量子干涉器件的临界电流，在零磁通量的极限下，对于晶体同侧有结的器件有最大值，而对于晶体对侧有结的器件有最小值，这些发现表明在超导体Sr 2 RuO 4中超导序参量的相位在反转时发生了变化.这一结果证实了Sr 2 RuO 4的奇宇称配对对称性和自旋三重态库珀对的形成。
Phase-sensitive measurements were made on Sr2RuO4 to establish unambiguously the odd-parity pairing in this material. The critical current of Au0.5In0.5-Sr2RuO4 superconducting quantum interference devices prepared on Sr2RuO4 single crystals was found to be a maximum for devices with junctions on the same side of the crystal and a minimum for devices with junctions on opposite sides, in the limit of zero magnetic flux; these findings indicate that the phase of the superconducting order parameter in Sr2RuO4 changes by it under inversion. This result verifies the odd-parity pairing symmetry and the formation of spin-triplet Cooper pairs in Sr2RuO4.