Surface superconductivity in a polycrystalline MgB2
โ Scribed by Menachem I. Tsindlekht; Grigory I. Leviev; Valery M. Genkin; Israel Felner; Pavlo Mikheenko; J. Stuart Abell
- Publisher
- Elsevier Science
- Year
- 2007
- Tongue
- English
- Weight
- 246 KB
- Volume
- 460-462
- Category
- Article
- ISSN
- 0921-4534
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The dependence of the critical current density, J c , on the gamma irradiation dose in MgB 2 polycrystalline superconducting specimens has been studied. The MgB 2 samples were irradiated with 10 MR and 20 MR doses of ฮณ-rays. The critical current density, J c was found to be enhanced almost at all te
The Fermi surface and superconducting gap of MgB 2 have been studied by angle-resolved photoemission spectroscopy. Two Fermi surfaces composed of the r band and the p band are clearly observed without contaminated by the ''surface-derived'' band. The high-resolution photoemission spectra show that s