Coulomb oscillation of a proton in a Ti-Ni-Cu-H glassy alloy with multiple junctions

Mikio Fukuhara, Shinichi Yamaura, Akihisa Inoue

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6 Citations (Scopus)


Following the discovery of Coulomb oscillation by the proton tunneling in Ni-Nb-Zr-H glassy alloys, we investigated the temperature-dependent hydrogen effect of electric conduction of the (Ti50Ni25Cu 25)100-xHx(0 ≤x ≤ 38.6) glassy alloys. Electric current-induced voltage oscillation at 560 kHz was observed in the current-voltage curve of nanoscopic size tunnel junctions arranged in a low-capacitance, multiple-junction configuration of the glassy alloys in the temperature range of 333 K to 6 K. The typical Coulomb staircase in I- V characteristics indicates typical quantum dot tunneling at room temperature. This behavior appeared to be derived from Coulomb oscillation, based on proton resonance associated with the multiple-junctions among Ti-tetrahedral clusters belonging to each icosahedron-like polyhedron in the Ni-Nb-Zr glassy alloys.

Original languageEnglish
Pages (from-to)153-157
Number of pages5
JournalPhysica Status Solidi (B) Basic Research
Issue number1
Publication statusPublished - 2009 Jan 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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