Evidence of s-wave subdominant order parameter in YBa2Cu3O7−δ from break-junction tunneling spectra

The tunneling spectra of YBa2Cu3O7−δ break junctions have been investigated for tunneling close to the node direction. The behavior of the zero-bias conductance peak (ZBCP) and the Josephson current have been studied as a function of the temperature and magnetic field. The deep splitting of the ZBCP...

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Published in:Low temperature physics (Woodbury, N.Y.) N.Y.), 2010-02, Vol.36 (2), p.167-170
Main Authors: Akimenko, A. I., Bobba, F., Giubileo, F., Gudimenko, V. A., Piano, S., Cucolo, A. M.
Format: Article
Language:English
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Summary:The tunneling spectra of YBa2Cu3O7−δ break junctions have been investigated for tunneling close to the node direction. The behavior of the zero-bias conductance peak (ZBCP) and the Josephson current have been studied as a function of the temperature and magnetic field. The deep splitting of the ZBCP is observed starting at TS
ISSN:1063-777X
1090-6517
DOI:10.1063/1.3319499