Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Ya. G. Ponomarev"'
Autor:
Elena S. Zhukova, Silvia Haindl, A. E. Karakozov, A. S. Prokhorov, Kazumasa Iida, M. V. Magnitskaya, Ya. G. Ponomarev, Boris Gorshunov, V. S. Nozdrin, Sina Zapf, Martin Dressel
Publikováno v:
JETP Letters. 100:328-335
The terahertz and infrared spectra of the complex dynamic conductivity, as well as the temperature dependences of the density of a superconducting condensate and the electronic specific heat of superconducting Ba(Fe1 − x Co x )2As2 compounds, have
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb3d9b785d3aab6eff358f6721996c28
https://doi.org/10.1134/s002136401417007x
https://doi.org/10.1134/s002136401417007x
Autor:
S. A. Kuzmichev, E. P. Khlybov, V. M. Pudalov, Nikolai D. Zhigadlo, S. N. Tchesnokov, T. E. Kuzmicheva, M. G. Mikheev, Ya. G. Ponomarev
Publikováno v:
Physics-Uspekhi. 57:819-827
We studied iron-based superconductors of various families with critical temperatures covering almost all range $T_C = 9 - 53$ K. In natural arrays of contacts formed in these materials we observed intrinsic multiple Andreev reflections effect (IMARE)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9ae11da8d43d5e57b162f7dc6d08e6ac
https://doi.org/10.3367/ufne.0184.201408i.0888
https://doi.org/10.3367/ufne.0184.201408i.0888
Publikováno v:
JETP Letters. 96:35-39
The effect of multiple Andreev reflections in YBa2Cu3O7 − x and Tl2Ba2Ca2Cu3O10 − δ has been studied. Several independent subharmonic gap structures associated with the multigap character of these superconductors have been revealed on the I(V) a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb4c7f9e6891b6e7bf3ad14cd969c03e
https://doi.org/10.1134/s0021364012130085
https://doi.org/10.1134/s0021364012130085
Autor:
Martin Dressel, Elena S. Zhukova, Boris Gorshunov, Ya. G. Ponomarev, Evgenii G. Maksimov, A. E. Karakozov
Publikováno v:
Journal of Experimental and Theoretical Physics. 115:252-262
A generalized α model for computing the superconducting parameters of real two-band superconductors is proposed based on an analysis of the properties of two-band equations in the theory of superconductivity. Using this model, we calculate the heat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4700f91c1268d2c3f86a917919c64f73
https://doi.org/10.1134/s1063776112060088
https://doi.org/10.1134/s1063776112060088
Autor:
Ya. G. Ponomarev, S. N. Tchesnokov, M. G. Mikheev, Alexander N. Vasiliev, Th. Wolf, M. V. Sudakova, T. E. Shanygina, S. A. Kuzmichev, Olga S. Volkova
Publikováno v:
Journal of Experimental and Theoretical Physics. 113:459-467
Current-voltage characteristics (CVCs) of Andreev superconductor-constriction-superconductor (ScS) contacts in polycrystalline samples of FeSe with the critical temperature T C = (12 ± 1) K have been measured using the break-junction technique. In S
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f0d57816c919b029c08d39a94683094
https://doi.org/10.1134/s1063776111080097
https://doi.org/10.1134/s1063776111080097
Autor:
E. P. Khlybov, M. G. Mikheev, S. A. Kuzmichev, A. S. Dormidontov, A. V. Sadakov, S. N. Tchesnokov, Yu. Eltsev, V. M. Pudalov, Ya. G. Ponomarev, T. E. Shanygina, A. S. Usoltsev, O. E. Omel’yanovskii
Publikováno v:
JETP Letters. 93:94-98
We have studied current-voltage characteristics of Andreev contacts in polycrystalline GdO$_{0.88}$F$_{0.12}$FeAs samples with bulk critical temperature ${T_c}$ = (52.5 \pm 1)K using break-junction technique. The data obtained cannot be described wit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::699f96cdc3ecd09dcdcb8b93090cd9dc
https://doi.org/10.1134/s0021364011020111
https://doi.org/10.1134/s0021364011020111
Publikováno v:
JETP Letters. 91:24-29
A detailed theoretical analysis of the experimental data obtained earlier in the studies of the tunneling spectra in the MgB2 two-band superconducting system has been performed. It is shown that most these data are well described in the generalized t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2dd6c418583bd080b09d81d9fb956dd0
https://doi.org/10.1134/s0021364010010066
https://doi.org/10.1134/s0021364010010066
Autor:
S. I. Krasnosvobodtsev, Hoang Van Hoai, Evgenii G. Maksimov, S. A. Kuzmichev, S. N. Tchesnokov, M. G. Mikheev, Ya. G. Ponomarev, Boris M. Bulychev, M. V. Sudakova
Publikováno v:
JETP Letters. 85:46-50
A detailed investigation of multiband superconductivity and Leggett’s mode in the Mg1−x AlxB2 (0 ≤ x ≤ 0.45) system was carried out using tunneling and Andreev spectroscopy. Temperature dependences of superconducting gaps Δσ and Δπ and th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::69e3c6ba321057465199c76f549ee2af
https://doi.org/10.1134/s0021364007010092
https://doi.org/10.1134/s0021364007010092
Autor:
Helmut Piel, S. N. Tchesnokov, Boris M. Bulychev, S.I. Krasnosvobodtsev, K. P. Burdina, A. V. Yarigin, Ya. G. Ponomarev, Matthias Hein, N. Z. Timergaleev, M. G. Mikheev, G. Müller, M. V. Sudakova, S. A. Kuzmichev, Evgenii G. Maksimov, A.V. Varlashkin, O. V. Kravchenko, L.G. Sevastyanova
Publikováno v:
Solid State Communications. 129:85-89
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 tunnel contact like (SIS) and point contact like (SnS) behavior. Both of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b3ea0482f6e5b0a1941f80ca4032ff86
https://doi.org/10.1016/j.ssc.2003.09.024
https://doi.org/10.1016/j.ssc.2003.09.024
Autor:
Boris M. Bulychev, K. P. Burdina, Ya. G. Ponomarev, S. A. Kuzmichev, P. E. Kaz, O. V. Kravchenko, L.G. Sevastyanova
Publikováno v:
Russian Chemical Bulletin. 52:1674-1680
Dense samples of pure magnesium boride and of the compositions Mg(1–x)A x B2 (A = Na, K, Ca, Sr, Ba, Sn, Ti; 0.05 < x < 0.15) were prepared by sintering and using high temperature—high pressure treatment. The lattice parameters of most of the dop
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63f449d9fbbadfe3151b612d01fd17a0
https://doi.org/10.1023/a:1026163230359
https://doi.org/10.1023/a:1026163230359