Abstract
AbstractFollowing 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 (Ti50Ni25Cu25)100–x Hx (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. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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