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

Mikio Fukuhara; Shinichi Yamaura; Akihisa Inoue

doi:10.1002/pssb.200844260

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

Mikio Fukuhara, Shinichi Yamaura, Akihisa Inoue

New Industry Creation Hatchery Center (NICHe)

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

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-xH_x(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 language	English
Pages (from-to)	153-157
Number of pages	5
Journal	Physica Status Solidi (B) Basic Research
Volume	246
Issue number	1
DOIs	https://doi.org/10.1002/pssb.200844260
Publication status	Published - 2009 Jan 1

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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abstract = "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.",

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T1 - Coulomb oscillation of a proton in a Ti-Ni-Cu-H glassy alloy with multiple junctions

AU - Fukuhara, Mikio

AU - Yamaura, Shinichi

AU - Inoue, Akihisa

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AB - 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.

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

Abstract

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