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APS » Journals » Phys. Rev. Lett. » Volume 101 » Issue 26
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Phys. Rev. Lett. 101, 267003 (2008) [4 pages]

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

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Hiroshi Kambara1, Satoshi Kashiwaya1, Hiroshi Yaguchi2, Yasuhiro Asano3, Yukio Tanaka4, and Yoshiteru Maeno5
1National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8568, Japan
2Department of Physics, Faculty of Science and Technology, Tokyo University of Science, Noda 278-8510, Japan
3Department of Applied Physics, Hokkaido University, Sapporo 060-8628, Japan
4Department of Applied Physics, Nagoya University, Nagoya 464-8603, Japan
5Department of Physics, Kyoto University, Kyoto 606-8502, Japan

Received 8 July 2008; published 30 December 2008

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.

© 2008 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.101.267003
DOI:
10.1103/PhysRevLett.101.267003
PACS:
74.70.Pq, 74.25.Sv, 74.45.+c, 74.81.−g
 
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