Zobrazeno 1 - 10
of 77
pro vyhledávání: '"J. F. Hamet"'
Autor:
J.-C. Villégier, R.W. Bland, Vu Dinh Lam, Khalil Harrabi, F. R. Ladan, J.-P. Maneval, J.-F. Hamet
Publikováno v:
Journal of Low Temperature Physics. 157:36-56
Using a sequence of stepped bias currents in the nanosecond range, we have studied the destruction of superconductivity in c-axis textured YBa2Cu3O7 strips of various thickness and structure (single or multi-layers). Sufficiently far from Tc, vortex
Publikováno v:
IEEE Transactions on Applied Superconductivity. 19:3541-3544
Transport measurements carried out on YBa2Cu3O7-delta films are compared to a model suggesting that the films boundary planes behave as rows of Josephson weak links. The obtained results suggest that, except if the films are very thin, the boundary p
Publikováno v:
Journal of the Korean Physical Society. 52:1652-1656
The resistive response of c-axis textured YBa2Cu3O7 bridges (100 nm thick and 10 µm wide) has been studied dynamically on the nanosecond scale over a wide span of temperatures and currents. From Tc down to 75 K, dissipation is dominated by the visco
Publikováno v:
Physica C: Superconductivity. 468:200-209
Transport measurements carried out on twinned YBa 2 Cu 3 O 7−δ films are compared to the predictions of a previously proposed model suggesting that the vortices move along the films twin boundaries that behave as rows of Josephson weak links [P. B
Autor:
J. F. Hamet, P. Bernstein
Publikováno v:
Journal of Applied Physics. 95:2569-2576
The transport properties of superconductive YBa2Cu3O7−δ (YBCO) twinned single crystals and epitaxial thin films are similar in the flux creep regime. In particular, the activation energy of the individual vortices is proportionnal to the temperatu
Publikováno v:
Physical Review B. 62:15162-15171
We show that transport measurements carried out with and without a low applied magnetic field enable one to characterize the vortex dynamics in high-Tc superconducting films. The application of a low magnetic field induces a modulation of the critica
Publikováno v:
Physica C: Superconductivity. :144-156
A set of YBa 2 Cu 3 O 7− δ (YBCO)/SrTiO 3 (STO) superlattices has been grown and characterized both by material properties and by heat exchange properties. These superlattices exhibited a critical temperature sensitivity to their period. Stacks of
Publikováno v:
physica status solidi (b). 215:691-695
The characterisation by magnetic force microscopy (MFM) of the magnetic microstructure of the surface of two ferromagnetic La0.7Sr0.3MnO3 films deposited on two oriented LaAlO3 (001) and SrTiO3 (001) substrates is reported. Using Raman spectroscopy,
Publikováno v:
Physical Review B. 60:1418-1424
Publikováno v:
IEEE Transactions on Applied Superconductivity
IEEE Transactions on Applied Superconductivity, 1999, 9 (2), pp.2635-2638. ⟨10.1109/77.785027⟩
IEEE Transactions on Applied Superconductivity, 1999, 9 (2), pp.2635-2638. ⟨10.1109/77.785027⟩
In order to develop superconducting flux flow devices, we have measured the electrical characteristics of microbridges made from bilayers comprised of a conductive capping layer deposited on a very thin YBa/sub 2/Cu/sub 3/O/sub 7-/spl delta// film. I