Role of interband scattering in neutron irradiated MgB{sub 2} thin films by scanning tunneling spectroscopy measurements
Journal Article
·
· Physical Review. B, Condensed Matter and Materials Physics
- University of Napoli and CNR/INFM-Coherentia, Via Cinthia, I-80126 Naples (Italy)
- Paul Scherrer Institut, CH-5232 Villigen (Switzerland)
- CNR/INFM-LAMIA, Via Dodecaneso 33, I-16146 Genova (Italy)
- Pennsylvania State University, University Park, Pennsylvania 16802 (United States)
A series of MgB{sub 2} thin films systematically disordered by neutron irradiation have been studied by scanning tunneling spectroscopy. The c-axis orientation of the films allowed a reliable determination of the local density of states of the {pi} band. With increasing disorder, the conductance peak moves towards higher voltages and becomes lower and broader, indicating a monotonic increase of the {pi} gap and of the broadening parameter. These results are discussed in the framework of two-band superconductivity.
- OSTI ID:
- 20976641
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 75, Issue 1; Other Information: DOI: 10.1103/PhysRevB.75.014515; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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