Martinez, E. N., V. L. P. Frank, E. J. Osquiguil, and F. de la Cruz. "Dimensional crossovers in collective flux pinning." Solid State Communications 60, no. 2 (1986): 151–155.
Abstract: The pinning force density in ribbons of melt spun (a) Zr70Cu30 is found to obey the Larkin-Ovchinnikov theory of collective pinning by dislocation loops, and shows two and three dimensional behaviour, besides an intermediate regime not contemplated by the theory. The dimensional crossovers allow determination of the radius of action of the pinning forces which is shown to be proportional to the coherence length. Its magnitude is too small, which points to quantitative shortcomings of the current theory.
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Maloney, M. D., F. de la Cruz, and M. Cardona. "Superconducting Parameters and Size Effects of Aluminum Films and Foils." Physical Review B 5, no. 9 (1972): 3558–3572.
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Maloney, M. D., F. de la Cruz, and M. Cardona. "Anomalous Behavior of Hc3/Hc2 near Tc for Sn-In and In-Bi Alloy Systems." Physical Review B 2, no. 7 (1970): 2512–2519.
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Maiorov, B., A. V. Silhanek, F. De la Cruz, E. Osquiguil, A. Rydh, and Rapp. "Comment on “strong vortex liquid correlation from multiterminal measurements on untwinned YBa2Cu3O7-? single crystals” [2] (multiple letters)." Physical Review Letters 88, no. 13 (2002).
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Maiorov, B., A. V. Silhanek, F. De la Cruz, and E. Osquiguil. "Comment on “strong vortex liquid correlation from multiterminal measurements on untwinned YBa2Cu3O7-? single crystals”." Physical Review Letters 88, no. 13 (2002): 1397031.
Abstract: Multiterminal measurements using experimental technique on twinned and untwinned YBa2Cu3O7-? crystals were presented. Inhomogeneous current distribution acting upon an uncorrelated vortex system showed that the dissipation of voltage at the top was larger than at the bottom. The behavior of the current voltage curves showed that the result Vtop = Vbot was a consequence of the limited voltage sensitivity.
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Luzuriaga, J., and F. de la Cruz. "Reversible magnetization of surface superconductivity." Solid State Communications 25, no. 8 (1978): 605–607.
Abstract: Direct measurements of the surface superconducting magnetization of the PbTl system shows that this state is a thermodynamic reversible one.
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Luzuriaga, J., C. D'Ovidio, and F. de la Cruz. "Ideal two dimensional flux pinning induced by annealing in superconducting amorphous Zr75Rh25." Solid State Communications 57, no. 9 (1986): 753–756.
Abstract: By annealing amorphous Zr75Rh25 prepared by melt spinning an ideal behaviour of the critical current was observed, in which the measured pinning forces are seen to follow the two dimensional Larkin-Orchivnikov theory. In the region where this theory is valid the changes in the pinning forces can be explained by the changes in the superconducting matrix and it can be assumed that the pinning centers do not change with the heat treatment.
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López, D., H. Safar, P. L. Gammel, D. A. Huse, S. N. Majumdar, L. F. Schneemeyer, D. J. Bishop, G. Nieva, and F. de la Cruz. "Reply to the Comment: Local versus Non-Local Conductivity in YBa2Cu3O7-d." Physical Review Letters 75 (1995): 2447.
Abstract: A Reply to the Comment by Yu. Eltsev and O. Rapp.
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López, D., E. Rodríguez, G. Nieva, F. de la Cruz, and S. W. Cheong. "Three-dimensional vortex flux flow in LSCO and YBCO through pseudo dc flux transformer measurements." Physica B: Condensed Matter 194-196, no. 2 (1994): 1977–1978.
Abstract: A pseudo dc flux transformer configuration shows that the flux flow in La2−xSrxCuO4 (x=0.075) and YBa2Cu3O7 single crystals is due to the movement of 3-D vortices across the sample. We show that the loss of c-axis long range vortex correlation is achieved either by thermal fluctuations or by an inhomogeneus Lorentz force acting on the vortices.
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López, D., E. F. Righi, G. Nieva, and F. de la Cruz. "Coincidence of Vortex-Lattice Melting and Loss of Vortex Correlation along the c Direction in Untwinned YBa2Cu3O7-δ Single Crystals." Physical Review Letters 76 (1996): 4034.
Abstract: We report on transport measurements using the dc flux transformer configuration in clean and twinned single crystals of YBa2Cu3O7-δ. We show that correlated disorder changes not only the order of the solid-liquid phase transition but also the nature of the vortices in the liquid state. In clean crystals, melting is shown to take place between a solid of vortex lines and a liquid with no correlation in the direction of the magnetic field.
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