The use of hydrogen as probe to study quantum interference at defects in metallic glasses

Kokanović, Ivan and Leontić, Boran and Lukatela, Jagoda (1992) The use of hydrogen as probe to study quantum interference at defects in metallic glasses. Fizika A, 1 (1). pp. 49-66. ISSN 1330-0008

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The electrical resistivity and the magnetic susceptibility of hydrogen-doped disordered Zr-Ni alloys have been measured at temperatures between 1.7K and 300K and in magnetic fields up to 6T for various dopant concentrations. The temperature and magnetic field dependence of the measured properties have been analysed using the theoretical models of weak-localization and electron-electron interaction in disordered three-dimensional conductors. Doping the samples with hydrogen increases the disorder. Thus, we have found that hydrogen strongly enhances quantum interference at defects. As a result the effective diffusion constant of the electrons and the screening of the Coulomb interaction are reduced. This leads to an increase in resistivity, suppression of the superconducting transition temperature, and to enhanced spin susceptibility at low temperatures. The Maki-Thompson interaction as well as the spin-orbit contribution to the magnetoresistivity are also depressed.

Item Type: Article
Date: 1992
Subjects: NATURAL SCIENCES > Physics
Divisions: Faculty of Science > Department of Physics
Publisher: Hrvatsko fizikalno društvo
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 18 Mar 2014 21:13
Last Modified: 21 Mar 2014 12:59

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