Observation of Andreev surface bound states in the 3-K phase region of Sr2RuO4

Zhiqiang Mao, K. D. Nelson, R. Jin, Ying Liu, Y. Maeno

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Abstract

The tunneling spectrum of the superconducting 3-K phase of Sr2RuO4 with cleaved junctions was measured. Andreev surface bound states were observed in the region below 3K which gave rise to a sharp zero-bias conductance peak (ZBCP). The Andreev reflection indicated that the phase of the pairing amplitude depended on the direction. A crossover from sharp to bell-shaped ZBCP was observed below the bulk Tc which supported a phase transition in the 3K-phase region near the bulk Tc.

Original languageEnglish (US)
Article number037003
Pages (from-to)370031-370034
Number of pages4
JournalPhysical Review Letters
Volume87
Issue number3
StatePublished - Jul 16 2001

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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