49 citations · 341 across the 21 of their papers we have counts for
23 papers
Direct observation of the spin exciton in Andreev spectroscopy of iron-based superconductors
M. M. Korshunov, S. A. Kuzmichev, T. E. Kuzmicheva
Quasiparticle excitations provide viable information on the physics of unconventional superconductors. Higgs and Leggett modes are some of the classic examples. Another important b…
Superconducting Order Parameters in overdoped BaFeNiAs Revealed by Multiple Andreev Reflection Spectroscopy of Planar Break-Junctions
T. E. Kuzmicheva, S. A. Kuzmichev, K. S. Pervakov +1
Using multiple Andreev reflection (MAR) spectroscopy, we studied superconductor - normal metal - superconductor (SnS) semiballistic contacts with incoherent transport in overdoped…
Electron and Superconducting Properties of the AFeAs (A= Li, Na) Family Alkali-Metal Pnictides: Current Stage of the Research (mini-review)
T. E. Kuzmicheva, S. A. Kuzmichev
The review is focused on one of the most exotic families of iron-based superconductors belonging to the AFeAs structural type, where A is alkali metal. We briefly concern physical…
Evolution of vortex pinning in the FeSeS system
V. A. Vlasenko, A. V. Sadakov, T. A. Romanova +8
We present a comprehensive study of vortex matter and pinning evolution in the FeSeS system with various doping degree. The influence of sulphur substitution on vortex…
Amplitudes of minima in dynamic conductance spectra of the SNS Andreev contact
Z. Popovic, S. Kuzmichev, T. Kuzmicheva
Despite several theoretical approaches describing multiple Andreev reflections (MAR) effect in superconductor-normal metal-superconductor (SNS) junction are elaborated, the problem…
Superconducting Order Parameter and Bosonic Mode in Hydrogen-Substituted NdFeAsOH Revealed by Multiple Andreev Reflection Spectroscopy
T. E. Kuzmicheva, S. A. Kuzmichev, N. D. Zhigadlo
Using intrinsic multiple Andreev reflections effect (IMARE) spectroscopy, we studied ballistic superconductor - normal metal - superconductor (SnS) contacts in layered oxypnictide…
Superconducting gap symmetry in BaFeNiAs superconductor
T. E. Kuzmicheva, S. A. Kuzmichev, A. V. Sadakov +8
We report on the Andreev spectroscopy and specific heat of high-quality single crystals BaFeNiAs. The intrinsic multiple Andreev reflection spectroscopy revea…
Evidence of a multiple boson emission in SmThOFeAs
S. A. Kuzmichev, T. E. Kuzmicheva, N. D. Zhigadlo
We studied a reproducible fine structure observed in dynamic conductance spectra of Andreev arrays in SmThOFeAs superconductors with various thorium concentrations ($x…
Break-junction technique in application to layered superconductors (Review article)
S. A. Kuzmichev, T. E. Kuzmicheva
Here presented a systematic study of superconductor-constriction-superconductor contacts realized by a break-junction technique in layered superconductors. Depending on the constri…
On the Structure of Superconducting Order Parameter in High-Temperature Fe-Based Superconductors
T. E. Kuzmicheva, A. V. Muratov, S. A. Kuzmichev +7
This paper discusses the synthesis, characterization, and comprehensive study of Ba-122 single crystals with various substitutions and various . The paper uses five complement…
Direct Evidence of Two Superconducting Gaps in FeSeTe: SnS-Andreev Spectroscopy and Lower Critical Field
T. E. Kuzmicheva, S. A. Kuzmichev, A. V. Sadakov +7
We present direct measurements of the superconducting order parameter in nearly optimal FeSeTe single crystals with critical temperature K. Using i…
Evolution of Superconducting Gaps in Th-Substituted SmThOFeAs Studied by Multiple Andreev Reflection Spectroscopy
T. E. Kuzmicheva, S. A. Kuzmichev, K. S. Pervakov +2
Using intrinsic multiple Andreev reflections effect (IMARE) spectroscopy, we studied SnS contacts in the layered oxypnictide superconductors SmThOFeAs with various thor…
Probing Bulk Superconducting Order Parameter in Ba(K)FeAs by Four Complementary Techniques
A. V. Muratov, T. E. Kuzmicheva, A. V. Sadakov +7
Using four different experimental techniques, we performed comprehensive studies of the bulk superconductive properties of single crystals of the nearly optimally doped $Ba_{1-x}K_…
Vortex Structure and Anisotropic Superconducting Gaps in Ba[Fe(Ni)]As
T. E. Kuzmicheva, V. A. Vlasenko, S. Yu. Gavrilkin +4
We studied nearly optimally Ni-substituted BaFeNiAs (BFNA) single crystals with \,K. In irreversible magnetization measurements, we determined the…
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…
Estimation of intraband and interband relative coupling constants from temperature dependences of the order parameter for two-gap superconductors
S. A. Kuzmichev, T. E. Kuzmicheva, S. N. Tchesnokov +2
We present temperature dependences of the large and the small superconducting gaps measured directly by SnS-Andreev spectroscopy in various Fe-based superconductors and MgB. Th…
Intrinsic Multiple Andreev Reflections in layered Th-doped SmThOFeAs
T. E. Kuzmicheva, S. A. Kuzmichev, S. N. Tchesnokov +1
Layered oxypnictide SmThOFeAs (Sm-1111) is an ideal candidate to be probed by intrinsic multiple Andreev reflections effect (IMARE) spectroscopy. Using the classical "b…
Lower critical field and SNS-Andreev spectroscopy of 122-arsenides: Evidence of nodeless superconducting gap
M. Abdel-Hafiez, P. J. Pereira, S. A. Kuzmichev +10
Using two experimental techniques, we studied single crystals of the 122-FeAs family with almost the same critical temperature, Tc. We investigated the temperature dependence of th…
Multiple Andreev Reflections Spectroscopy of Superconducting LiFeAs Single Crystals: Anisotropy and Temperature Behavior of the Order Parameters
S. A. Kuzmichev, T. E. Kuzmicheva, A. I. Boltalin +1
The superconducting state of LiFeAs single crystals with the maximum critical temperature in the 111 family has been studied in detail by multiple Andreev ref…
Doping Influence on SmThOFeAs Superconducting Properties: Observation of Intrinsic Multiple Andreev Reflections Effect and Superconducting Parameters Determination
T. E. Kuzmicheva, S. A. Kuzmichev, N. D. Zhigadlo
We studied SNS- and S-N-S-N-...-S contacts (where S - superconductor, N - normal metal) formed by "break-junction" technique in polycrystalline SmThOFeAs superconductor…
Crystal growth, transport phenomena and two gap superconductivity in the mixed alkali metal iron selenide
Maria Roslova, Svetoslav Kuzmichev, Tatiana Kuzmicheva +7
Using the self-flux technique we grew superconducting (z = 0.3) single crystals. The EDX mapping revealed the uniform elements distribution on the c…
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$…