Transport properties of hydrogen-doped (Zr80 3d20 )1−x H x (3d = Co, Ni) metallic glasses
| Autor: | Boran Leontić, Ivan Kokanović, Jagoda Lukatela |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Superconductivity
Amorphous metal Condensed matter physics Hydrogen Dopant Chemistry Doping chemistry.chemical_element Condensed Matter Physics Electronic Optical and Magnetic Materials Electrical resistivity and conductivity Condensed Matter::Superconductivity Scattering rate Temperature coefficient |
| Zdroj: | physica status solidi (b). 241:908-915 |
| ISSN: | 0370-1972 |
| DOI: | 10.1002/pssb.200301959 |
| Popis: | The electrical resistivities of hydrogen-doped (Zr803d20)1−xHx (3d = Ni, Co; x ≤ 0.11) metallic glasses have been measured at temperatures between 2 K and 110 K and in magnetic fields up to 1 T for various dopant concentrations. These systems have a high room-temperature resistivity (ρ > 160 μΩ cm) and become superconducting below 4 K. The increase of the room-temperature resistivity and its temperature coefficient with hydrogen dopant concentration is explained as due to an increase of disorder with hydrogen-doping. The temperature and magnetic field dependence of the resistivity has been analysed using theoretical models of weak-localisation and electron–electron interaction in disordered conductors. The hydrogen dopant is found to reduce the effective electron diffusion constant, D, the spin-orbit scattering rate, τ−1so, the superconducting transition temperature, Tc, and broadens the superconducting transition region. The contribution of the Maki-Thompson interaction to the magnetoresistivity is also reduced. (© 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) |
| Databáze: | OpenAIRE |
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