76 citations · 215 across the 10 of their papers we have counts for
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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 $4.2…
Phase separation near the charge neutrality point in FeSeTe crystals with x 0.15
Y. A. Ovchenkov, D. A. Chareev, E. S. Kozlyakova +6
Our study of FeSeTe crystals with x 0.15 shows that the phase separation in these compositions occurs into phases with a different stoichiometry of iron. This…
Andreev spectroscopy of iron-based superconductors: temperature dependence of the order parameters and scaling of the with
T. E. Kuzmicheva, S. A. Kuzmichev, M. G. Mikheev +5
We studied iron-based superconductors of various families with critical temperatures covering almost all range K. In natural arrays of contacts formed in these mater…
Experimental study of intrinsic multiple Andreev reflections effect in GdO(F)FeAs superconductor array junctions
T. E. Kuzmicheva, S. A. Kuzmichev, M. G. Mikheev +8
We report the first observation of the intrinsic multiple Andreev reflections effect (IMARE) in S-n-S-...-S-arrays (S = superconductor, n = normal metal) formed by "break-junction"…
Multiple Andreev reflections spectroscopy of two-gap 1111- and 11 Fe-based superconductors
Ya. G. Ponomarev, S. A. Kuzmichev, T. E. Kuzmicheva +10
Using the "break-junction" technique we prepared and studied superconductor - constriction - superconductor nanocontacts in polycrystalline samples of Fe-based superconductors CeO$…
Multigap Superconductivity in GdFeAsO Evidenced by SnS-Andreev Spectroscopy
T. E. Shanygina, S. A. Kuzmichev, M. G. Mikheev +8
Using intrinsic multiple Andreev reflection effect (IMARE) spectroscopy we studied superconducting properties of nearly optimal oxygen-deficient GdFeAsO polycrystalline sa…
THz phonon spectroscopy of doped superconducting cuprates
Ya. G. Ponomarev, Hoang Hoai Van, S. A. Kuzmichev +4
Terahertz phonon spectroscopy studies of bismuth cuprates are overviewed.
Study of the Two-Gap Superconductivity in GdO(F)FeAs by ScS-Andreev Spectroscopy
T. E. Shanygina, Ya. G. Ponomarev, S. A. Kuzmichev +9
Current-voltage characteristics and dynamic conductance of the superconductor - constriction - superconductor junctions in GdO(F)FeAs polycrystalline samples with critical temperat…
Observation of Multi-Gap Superconductivity in GdO(F)FeAs by Andreev Spectroscopy
T. E. Shanygina, Ya. G. Ponomarev, S. A. Kuzmichev +9
We have studied current-voltage characteristics of Andreev contacts in polycrystalline GdOFFeAs samples with bulk critical temperature = (52.5 \pm 1)K usi…
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…