Showing 2002 · cond-mat.supr-conShow all

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cond-mat.supr-con2002★ 8 cited

Influence of the van Hove singularity on the specific heat jump in BCS superconductors

T. Mishonov, S. -L. Drechsler, E. Penev

Within the weak-coupling BCS scheme we derive a general form of the coefficients in the Ginzburg-Landau expansion of the free energy of a superconductor for the case of a Fermi lev…

cond-mat.supr-con2002★ 23 cited

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…

cond-mat.supr-con2002★ 12 cited

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…

cond-mat.supr-con2002★ 242 cited

Nanoengineered magnetic-field-induced superconductivity

M. Lange, M. J. Van Bael, Y. Bruynseraede +1

The perpendicular critical fields of a superconducting film have been strongly enhanced by using a nanoengineered lattice of magnetic dots (dipoles) on top of the film. Magnetic-fi…

cond-mat.supr-con2002★ 30 cited

Vortex lattice in presence of a tunable periodic pinning potential

W. V. Pogosov, A. L. Rakhmanov, V. V. Moshchalkov

The vortex patterns stabilized by the square array of artificial pinning sites with a tunable pinning strength are studied by using a phenomenological approach in the London limit.…

cond-mat.supr-con2002★ 26 cited

Thermodynamics of anisotropic-gap and multiband clean BCS superconductors

T. Mishonov, E. Penev

The free energy, non-gradient terms of the Ginzburg-Landau expansion, and the jump of the specific heat of a multiband anisotropic-gap clean BCS superconductor are derived in the f…

cond-mat.supr-con2002★ 9 cited

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…

cond-mat.supr-con2002★ 6 cited

Reduced pairing hamiltonian for interatomic two-electron exchange in layered cuprates

T. M. Mishonov, J. P. Wallington, E. S. Penev +1

A detailed Linear Combination of Atomic Orbitals (LCAO) tight-binding model is developed for the layered High-Temperature Superconductor cuprates. The band structure of these mater…

cond-mat.supr-con2002★ 58 cited

Magnetic-domain-controlled vortex pinning in a superconductor/ferromagnet bilayer

M. Lange, M. J. Van Bael, V. V. Moshchalkov +1

Vortex pinning in a type-II superconducting Pb film covering a Co/Pt multilayer with perpendicular magnetic anisotropy is investigated. Different stable magnetic domain patterns li…

cond-mat.supr-con2002★ 11 cited

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…

cond-mat.supr-con2002★ 28 cited

Anisotropic s-wave superconductivity: comparison with experiments on MgB2 single crystals

A. I. Posazhennikova, T. Dahm, K. Maki

The recently discovered superconductivity in MgB2 has captured world attention due to its simple crystal structure and relatively high superconducting transition temperature Tc=39K…

cond-mat.supr-con2002★ 115 cited

Stable vortex-antivortex molecules in mesoscopic superconducting triangles

V. R. Misko, V. M. Fomin, J. T. Devreese +1

A thermodynamically stable vortex-antivortex pattern has been revealed in mesoscopic type I superconducting triangles, contrary to type II superconductors where similar patterns ar…

cond-mat.supr-con2002

Nanostructured superconductor/ferromagnet bilayers

M. Lange, M. J. Van Bael, L. Van Look +3

The pinning properties of type-II superconductors can be efficiently controlled by using laterally nanostructured ferromagnet / superconductor bilayers. This will be illustrated by…