Control of the glass-liquid transition temperature in YBa2 Cu3 O7-x films

Tomoya Horide, Kaname Matsumoto, Paolo Mele, Yutaka Yoshida, Ataru Ichinose, Ryusuke Kita, Shigeru Horii, Masashi Mukaida

    Research output: Contribution to journalArticlepeer-review

    22 Citations (Scopus)

    Abstract

    Magnetic field dependences of the glass-liquid transition temperature (Tg) were studied in YBa2 Cu3 O7-x films containing various types of nanoinclusions. The vortex configuration (entangled or straight) and pinning strength for each vortex are crucial to the behaviors of Tg. c -axis correlated pinning centers optimize these factors and achieve the upper limit of Tg, which is determined by loss of line tension of vortices, if they are elongated through a thickness of a sample. By optimizing pinning centers, critical temperature, and a matching field, a Tg value of 77 K can be obtained in YBa2 Cu3 O7-x in a magnetic field as high as 27 T.

    Original languageEnglish
    Article number092504
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Volume79
    Issue number9
    DOIs
    Publication statusPublished - Mar 3 2009

    All Science Journal Classification (ASJC) codes

    • Condensed Matter Physics
    • Electronic, Optical and Magnetic Materials

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