Showing 2003 · cond-mat.supr-conShow all

15 papers · 2 filters

cond-mat.supr-con2003★ 1 cited

Anisotropic scaling in YBa2Cu3O7 crystals with columnar defects

Alejandro V. Silhanek, Leonardo Civale

We explore the interplay between the mass anisotropy and the uniaxial pinning of tilted columnar defects (CD) in a YBa2Cu3O7 single crystal. At high temperatures T and fields H a s…

cond-mat.supr-con2003★ 16 cited

Influence of the stray field of magnetic dot on the nucleation of superconductivity in a disk

D. S. Golubovic, W. V. Pogosov, M. Morelle +1

We have investigated the nucleation of superconductivity in an Al mesoscopic disk, with a magnetic dot on the top. The dot is magnetized perpendicularly, and its magnetic field is…

cond-mat.supr-con2003★ 33 cited

Phase diagram of a superconductor / ferromagnet bilayer

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

The magnetic field (H) - temperature (T) phase diagram of a superconductor is significantly altered when domains are present in an underlying ferromagnet with perpendicular magneti…

cond-mat.supr-con2003★ 20 cited

Little-Parks effect in a superconducting loop with magnetic dot

D. S. Golubovic, W. V. Pogosov, M. Morelle +1

We have studied the nucleation of superconductivity in a mesoscopic Al loop, enclosing magnetic dot with perpendicular magnetization. The superconducting phase boundary Tc(B), dete…

cond-mat.supr-con2003

The Role of Nonlocality in the Pinning Properties of Borocarbides Materials

A. V. Silhanek, J. R. Thompson, L. Civale +2

An experimental review on the influence of nonlocal electrodynamics in the vortex pinning properties of non-magnetic borocarbide superconductors is presented. We show that the pinn…

cond-mat.supr-con2003★ 2 cited

Angular dependent vortex dynamics in superconductors with columnar defects

Leonardo Civale, Alejandro V. Silhanek, Gabriela Pasquini

We explore in detail the angular dependent vortex dynamics in type II superconductors with aligned columnar defects introduced by irradiation with very energetic heavy-ions. We use…

cond-mat.supr-con2003★ 3 cited

'Giant' normal state magnetoresistances of BiSrCaCuO

V. N. Zavaritsky, J. Vanacken, V. V. Moshchalkov +1

Magnetoresistance (MR) of Bi-2212 single crystals with T is studied in pulsed magnetic fields up to 50T along the c-axis in a wide temperature range. The ne…

cond-mat.supr-con2003

High field magnetoresistivity of epitaxial La2-xSrxCuO4 thin films

J. Vanacken, L. Weckhuysen, T. Wambecq +2

A large positive magnetoresistivity (up to tens of percents) is observed in both underdoped and overdoped superconducting La2-xSrxCuO4 epitaxial thin films at temperatures far abov…

cond-mat.supr-con2003★ 23 cited

Nucleation of superconductivity in Al mesoscopic disk with magnetic dot

D. S. Golubovic, W. V. Pogosov, M. Morelle +1

We have studied the nucleation of superconductivity in a mesoscopic Al disk wit a Co/Pd magnetic dot placed on the top by measuring the normal superconducting phase boundary Tc(B).…

cond-mat.supr-con2003★ 36 cited

The in-plane paraconductivity in La_{2-x}Sr_xCuO_4 thin film superconductors at high reduced-temperatures: Independence of the normal-state pseudogap

Severiano R. Curras, Gonzalo Ferro, M. Teresa Gonzalez +5

The in-plane resistivity has been measured in (LSxCO) superconducting thin films of underdoped (), optimally-doped () and overdoped ($x=0.2…

cond-mat.supr-con2003★ 3 cited

Bernoulli Potential, Hall Constant and Cooper Pairs Effective Masses in Disordered BCS Superconductors

T. Mishonov, E. Penev

It is analyzed what fundamental new information for the properties of the superconductors can be obtained by systematic investigation of the Bernoulli effect. It is shown that it i…

cond-mat.supr-con2003★ 52 cited

Anisotropic vortex pinning in superconductors with a square array of rectangular submicron holes

L. Van Look, B. Y. Zhu, R. Jonckheere +3

We investigate vortex pinning in thin superconducting films with a square array of rectangular submicron holes ("antidots"). Two types of antidots are considered: antidots fully pe…

cond-mat.supr-con2003★ 103 cited

Guided vortex motion in superconductors with a square antidot lattice

A. V. Silhanek, L. Van Look, S. Raedts +2

We have measured the in-plane anisotropy of the vortex mobility in a thin Pb film with a square array of antidots. The Lorentz force, acting on the vortices, was rotated by adding…

cond-mat.supr-con2003★ 22 cited

Kinetics and Boltzmann kinetic equation for fluctuation Cooper pairs

Todor M. Mishonov, Georgi V. Pachov, Ivan N. Genchev +2

The Boltzmann equation for excess Cooper pairs above T_c is derived in the framework of the time-dependent Ginzburg-Landau (TDGL) theory using Langevin's approach of the stochastic…

cond-mat.supr-con2003★ 39 cited

Field-dependent Vortex Pinning Strength in a Periodic Array of Antidots

A. V. Silhanek, S. Raedts, M. Lange +1

We explore the dynamic response of vortex lines in a Pb thin film with a periodic array of antidots by means of ac-susceptibility measurements. For low drive field amplitudes, with…