Temperature dependence of lower critical field shows nodeless superconductivity in FeSe

M Abdel-Hafiez, J Ge, AN Vasiliev, DA Chareev… - Physical Review B …, 2013 - APS
We investigate the temperature dependence of the lower critical field H c 1 (T) of a high-
quality FeSe single crystal under static magnetic fields H parallel to the c axis. The …

On the structure of the superconducting order parameter in high-temperature Fe-based superconductors

TE Kuzmicheva, AV Muratov, SA Kuzmichev… - Physics …, 2017 - iopscience.iop.org
We discuss the synthesis, characterization, and comprehensive study of Ba-122 single
crystals with various substitutions and various superconducting transition temperatures. We …

Amplitudes of minima in dynamic conductance spectra of the SNS Andreev contact

Z Popović, S Kuzmichev, T Kuzmicheva - Journal of Applied Physics, 2020 - pubs.aip.org
Although several theoretical approaches describing multiple Andreev reflection (MAR)
effects in the superconductor–normal metal–superconductor (SNS) junction are elaborated …

VL Ginzburg and the development of experimental work on high-temperature superconductivity at LPI:'iron superconductors'

VM Pudalov, OE Omel'yanovskii, EP Khlybov… - Physics …, 2011 - iopscience.iop.org
One day in 2006, one of the authors of this paper (VMP) received a surprise phone call with
an exciting proposal. The caller was VL Ginzburg, and the proposal was to undertake …

Andreev spectroscopy of iron-based superconductors: temperature dependence of the order parameters and scaling of the with

TE Kuzmicheva, SA Kuzmichev, MG Mikheev… - arXiv preprint arXiv …, 2016 - arxiv.org
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 …

Experimental study of the intrinsic multiple Andreev reflections effect in GdO (F) FeAs superconductor array junctions

TE Kuzmicheva, SA Kuzmichev, MG Mikheev… - Europhysics …, 2013 - iopscience.iop.org
We report the first observation of the intrinsic multiple Andreev reflections effect (IMARE) in
SnS-...-S arrays (S= superconductor, n= normal metal) formed by a" break-junction" …

Evolution of superconducting gaps in Th-substituted studied by multiple Andreev reflection spectroscopy

TE Kuzmicheva, SA Kuzmichev, KS Pervakov… - Physical Review B, 2017 - APS
Using intrinsic multiple Andreev reflections effect spectroscopy, we studied SnS contacts in
the layered oxypnictide superconductors Sm 1− x Th x OFeAs with various thorium doping …

Determination of the electron-phonon coupling constants from the experimental temperature dependences of superconducting gaps in MgB2

SA Kuzmichev, TE Kuzmicheva, SN Tchesnokov - JETP Letters, 2014 - Springer
Experimental temperature dependences Δ σ, π (T) of the energy of superconducting gaps for
MgB 2 samples with the critical temperatures 22 K< T c< 41 K have been fitted by selecting …

Andreev spectroscopy of FeSe: Evidence for two-gap superconductivity

YG Ponomarev, SA Kuzmichev, MG Mikheev… - Journal of Experimental …, 2011 - Springer
Current-voltage characteristics (CVCs) of Andreev superconductor-constriction-
superconductor (ScS) contacts in polycrystalline samples of FeSe with the critical …

Superconducting order parameter and bosonic mode in hydrogen-substituted revealed by multiple-Andreev-reflection spectroscopy

TE Kuzmicheva, SA Kuzmichev, ND Zhigadlo - Physical Review B, 2019 - APS
Using intrinsic multiple-Andreev-reflection-effect spectroscopy, we studied ballistic
superconductor-normal metal-superconductor (SnS) contacts in layered oxypnictide …