24 citations · 205 across the 51 of their papers we have counts for
8 papers · 1 filter
Influence of Zeeman splitting and thermally excited polaron states on magneto-electrical and magneto-thermal properties of magnetoresistive polycrystalline manganite La_{0.8}Sr_{0.2}MnO_3
S. Sergeenkov, J. Mucha, M. Pekala +2
Some possible connection between spin and charge degrees of freedom in magneto-resistive manganites is investigated through a thorough experimental study of the magnetic (AC suscep…
Influence of chemical pressure effects on nonlinear thermal conductivity of intrinsically granular superconductors
Sergei Sergeenkov
Using a 2D model of capacitively coupled Josephson junction arrays (created by a network of twin boundary dislocations with strain fields acting as an insulating barrier between ho…
Possible manifestation of spin fluctuations in the temperature behavior of resistivity in Sm_{1.85}Ce_{0.15}CuO_4 thin films
S. Sergeenkov, A. J. C. Lanfredi, F. M. Araujo-Moreira
A pronounced step-like (kink) behavior in the temperature dependence of resistivity is observed in the optimally-doped thin films around $T_{sf}=87…
Irreversibility line and low-field grain-boundary pinning in electron-doped superconducting thin films
S. Sergeenkov, A. J. C. Lanfredi, F. M. Araujo-Moreira
AC magnetic susceptibilities of electron-doped Pr_{1.85}Ce_{0.15}CuO_4 (PCCO) and Sm_{1.85}Ce_{0.15}CuO_4 (SCCO) granular thin films have been measured as a function of temperature…
Thermal expansion of Josephson junctions as an elastic response to an effective stress field
S. Sergeenkov, G. Rotoli, G. Filatrella +1
By introducing a concept of thermal expansion (TE) of a Josephson junction as an elastic response to an effective stress field, we study (both analytically and numerically) the tem…
Influence of structural disorder on low-temperature behavior of penetration depth in electron-doped high-T_C thin films
A. J. C. Lanfredi, S. Sergeenkov, F. M. Araujo-Moreira
To probe the influence of structural disorder on low-temperature behavior of magnetic penetration depth in electron-doped high-T_C superconductors, a comparative study of high-qual…
On the origin of unusual transport properties observed in densely packed polycrystalline CaAl_{2}
S. Sergeenkov, F. M. Araujo-Moreira
A possible origin of unusual temperature behavior of transport coefficients observed in densely packed polycrystalline CaAl_{2} compound [M. Ausloos et al., J. Appl. Phys. 96, 7338…
Probing pairing symmetry of Sm_{1.85}Ce_{0.15}CuO_4 via highly-sensitive voltage measurements: Evidence for strong impurity scattering
A. J. C. Lanfredi, S. Sergeenkov, F. M. Araujo-Moreira
Using a highly-sensitive home-made mutual-inductance technique, temperature profiles of the magnetic penetration depth in the optimally-doped thin…