52 citations · 601 across the 45 of their papers we have counts for
12 papers · 1 filter
Paramagnetic Meissner effect in ZrB12 single crystal with non-monotonic vortex-vortex interactions
Jun-Yi Ge, Vladimir N. Gladilin, Nikolay E. Sluchanko +4
The magnetic response related to paramagnetic Meissner effect (PME) is studied in a high quality single crystal ZrB12 with non-monotonic vortex-vortex interactions. We observe the…
Size and mass of Cooper pairs determined by low-energy SR and PNR
V. Kozhevnikov, A. Suter, H. Fritzsche +9
The Pippard coherence length (the size of a Cooper pair) in an extreme type-I superconductor was determined directly through high-resolution measurement of the nonlocal elect…
Evidence for nonmonotonic magnetic field penetration in a type-I superconductor
V. F. Kozhevnikov, C. V. Giuraniuc, M. J. Van Bael +12
Polarized neutron reflectometry (PNR) provides evidence that nonlocal electrodynamics governs the magnetic field penetration in an extreme low-k superconductor. The sample is an in…
Surface Enhancement of Superconductivity in Tin
V. F. Kozhevnikov, M. J. Van Bael, W. Vinckx +3
The possibility of surface enhancement of superconductivity is examined experimentally. It is shown that single crystal tin samples with cold-worked surfaces represent a supercondu…
Specific Heat Discontinuity in Impure Two-Band Superconductors
Todor M. Mishonov, Evgeni S. Penev, Joseph O. Indekeu +1
The Ginzburg-Landau coefficients, and the jump of the specific heat are calculated for a disordered two-band superconductor. We start with the analysis of a more general case arbit…
Superconductivity of overdoped cuprates: the modern face of the ancestral two-electron exchange
T. M. Mishonov, J. O. Indekeu, E. S. Penev
The single-site two-electron exchange amplitude J_sd between the Cu 4s and Cu 3d_{x^2-y^2} states is found to be the pairing mechanism of high-T_c overdoped cuprates. The nonintera…
The 3d-to-4s-by-2p highway to superconductivity in cuprates
T. M. Mishonov, J. O. Indekeu, E. S. Penev
High-temperature superconductors are nowadays found in great variety and hold technological promise. It is still an unsolved mystery that the critical temperature T_c of the basic…
Comment on "Anisotropic s-wave superconductivity in MgB_2"
Todor M. Mishonov, Evgeni S. Penev, Joseph O. Indekeu
An analytical result for renormalization of the jump of the heat capacity Delta C/C_N by the anisotropy of the order parameter is derived in the framework of the model proposed by…
Observation of a sharp lambda peak in the third harmonic voltage response of high-Tc superconductor thin films
Nicolas Cheenne, Todor Mishonov, Joseph Indekeu
In this paper, we report on the sharp peak observed in the third harmonic voltage response generated by a bias sinusoidal current applied to several strips patterned in a YBa2Cu3O7…
Generation of 3rd and 5th harmonics in a thin superconducting film by temperature oscillations and isothermal nonlinear current response
Todor Mishonov, Nicolas Chéenne, Didier Robbes +1
The generation of harmonics of the voltage response is considered when an AC current is applied through a superconducting film above T_c. It is shown that almost at all temperature…
Superconducting properties of mesoscopic cylinders with enhanced surface superconductivity
B. J. Baelus, S. V. Yampolskii, F. M. Peeters +2
The superconducting state of an infinitely long superconducting cylinder surrounded by a medium which enhances its superconductivity near the boundary is studied within the nonline…
Fluctuation conductivity in superconductors in strong electric fields
Todor Mishonov, Anna Posazhennikova, Joseph Indekeu
We study the effect of a strong electric field on the fluctuation conductivity within the time-dependent Ginzburg-Landau theory for the case of arbitrary dimension. Our results are…