Magnetic field tunneling spectroscopy of YBa2Cu3 O7-δ/La0.67Sr0.33MnO3 junctions

H. Kashiwaya, S. Kashiwaya, B. Prijamboedi, K. Ikeda, I. Kurosawa, H. Tsuchiura, Y. Tanaka

Research output: Contribution to journalArticlepeer-review

Abstract

The magnetic field responses of the zero-bias conductance peaks (ZBCP) in tunneling spectra of YBa2Cu3O7-δ/La 0.67Sr0.33MnO3 (YBCO/LSMO) junctions are investigated. Two different responses of the ZBCP are shown. One is insensitive to the field up to 9 T, the other is highly sensitive and easily suppressed by the applied field less than 1 T. Accordingly the origins of the ZBCP are attributed to the mid-gap Andreev bound states and the coherent Andreev reflection, respectively. The coexistence of two different origins in d-wave junction is consistent with the theoretical prediction based on the circuit theory.

Original languageEnglish
Pages (from-to)275-278
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume412-414
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - 2004 Oct 1
Externally publishedYes

Keywords

  • Mesoscopic effect
  • Tunnel junction
  • YBCO
  • Zero-bias conductance peak

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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