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Leggett's plasma resonances and two-gap structures in the CVCs of MgB break junctions a direct evidence for a two-gap superconductivity in MgB
Ya. G. Ponomarev, S. A. Kuzmichev, M. G. Mikheev +13
In the present investigation (2002) the current-voltage characteristics (CVCs) of break junctions in polycrystalline samples have been studied in the temperature range $4.2…
Temperature Dependence of Superconducting Gaps in Mg(Al)B2 System Investigated by SnS-Andreev Spectroscopy
S. A. Kuzmichev, T. E. Shanygina, S. N. Tchesnokov +1
Detailed temperature dependence of both superconducting gaps was obtained directly by means of SnS-Andreev spectroscopy. The Δσ,π(T) -curves were shown to be deviated from standard…
Experimental evidence of two-band behavior of MgB2
Ya. G. Ponomarev, S. A. Kuzmichev, M. G. Mikheev +14
The break-junction tunneling has been systematically investigated in MgB2. Two types of the break-junction contacts have been exploited on the same samples, which demonstrated tunn…