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| Author | Safar, H.; Lopez, D.; Gammel, P.L.; Huse, D.A.; Majumdar, S.N.; Schneemeyer, L.F.; Bishop, D.J.; Nieva, G.; de la Cruz, F. | ||||
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Experimental evidence of a non-local resistivity in a vortex line liquid | Type | Journal Article | ||
| Year | 1994 | Publication | Physica C: Superconductivity | Abbreviated Journal | Physica C |
| Volume | 235-240 | Issue | 4 | Pages | 2581-2582 |
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| Abstract | We present transport measurements on YBCO single crystals in the vortex liquid regime using the DC flux transformer geometry. We show that the data are inconsistent with the material being an anisotropic, local conductor. The results provided evidence for non-local transport which indicate that there can be correlated vortex motion over macroscopic distances in this system. We have shown that this correlated vortex motion can be destroyed by either thermal fluctuations or the applications of large driving forces. | ||||
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| Notes | Approved | no | |||
| Call Number | BT @ gnieva @ | Serial | 450 | ||
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| Author | Kaufman, H.L.; de la Cruz, F. | ||||
| Title |
Fluctuation induced diamagnetism in aluminum | Type | Journal Article | ||
| Year | 1971 | Publication | Solid State Communications | Abbreviated Journal | Solid State Commun. |
| Volume | 9 | Issue | 20 | Pages | 1729-1732 |
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| Abstract | The magnetic field and temperature dependence of the magnetization of bulk aluminum near the normal-superconductor transition has been measured. Due to the large amount of supercooling in one of the samples it was possible to extend the measurements well below the critical temperature. A comparison of the experimental results with theory is presented. Résumé Nous avons mesuré la dépendance en champ magnétique et en température de la magnétisation d'un échantillon massif d'aluminium au voisinage de la transition état normal-état supraconducteur. Grâce au ‘supercooling’ important d'un des échantillon, nous avons pu étendre nos mesures bien au dessous de la température critique. Nous comparons les résultats expérimentaux à la théorie. |
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| ISSN | 0038-1098 | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | BT @ pedrazp @ | Serial | 803 | ||
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| Author | López, D.; Nieva, G.; de la Cruz, F.; Jensen, Henrik Jeldtoft; O’Kane, Dominic | ||||
| Title |
Flux cutting in YBa2Cu3O7-δ single crystals: Experiment and phenomenological model | Type | Journal Article | ||
| Year | 1994 | Publication | Physical Review B | Abbreviated Journal | Phys. Rev. B |
| Volume | 50 | Issue | Pages | 9684 | |
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| Abstract | We measured the current-induced loss of vortex correlation in YBa2Cu3O7-δ crystals using the pseudo-dc-flux-transformer geometry. We find that the current density Jcut at which the top and bottom voltage drops differ is a linear function of temperature, is independent of pinning, and depends on the thickness of the sample. This thickness dependence strongly suggests that the electrical current flows at the surface of the sample. The observed behavior with temperature, magnetic field, and thickness is described by a phenomenological model. | ||||
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| Notes | Approved | no | |||
| Call Number | BT @ gnieva @ | Serial | 445 | ||
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| Author | Grigera, S.A.; Grigera, T.S.; Righi, E.F.; Nieva, G.; de la Cruz, F. | ||||
| Title |
Flux-cutting in YBa2Cu3O7-delta revisited | Type | Journal Article | ||
| Year | 2002 | Publication | PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | Abbreviated Journal | |
| Volume | 371 | Issue | 3 | Pages | 237-242 |
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| Abstract | In this paper we present an analysis of the response of the vortices in YBa2Cu3O7-delta to different configurations of applied driving forces. The use of inhomogeneous current allows us to induce vortex cutting. We determine the maximum current injected in different electrical contact distributions which preserves vortex integrity, and we show that vortex cutting cannot be explained by a single vortex picture. (C) 2001 Elsevier Science B.V. All rights reserved. | ||||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0921-4534 | ISBN | Medium | ||
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| Notes | ISI:000176131500007 | Approved | no | ||
| Call Number | BT @ hernan @ | Serial | 212 | ||
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| Author | Duran, C.; Yazyi, J.; de la Cruz, F.; Bishop, D.J.; Mitzi, D.B.; Kapitulnik, A. | ||||
| Title |
Flux-lattice melting, anisotropy, and the role of interlayer coupling in Bi-Sr-Ca-Cu-O single crystals | Type | Journal Article | ||
| Year | 1991 | Publication | Physical Review B | Abbreviated Journal | PRB |
| Volume | 44 | Issue | 14 | Pages | 7737-7740 |
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| Abstract | We have used the high-Q mechanical-oscillator technique to probe the vortex-lattice structure in high-quality Bi-Sr-Ca-Cu-O single crystals over a wide range of magnetic fields (200 Oe to 40 kOe), and relative orientations θ between the magnetic field and the crystalline c^ axis. In addition to the large softening and dissipation peak previously observed and interpreted as due to flux-lattice melting, another distinctly different peak at higher temperatures is seen. The temperatures where the dissipation peaks take place are solely defined by the parallel component of the field cosθ, while the restoring force on the oscillator is due to both field components. We suggest that the two peaks are due to the softening of interplanar coupling at the low-temperature peak, and melting or depinning of the two-dimensional pancake vortices at the higher-temperature peak. | ||||
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| Publisher | American Physical Society | Place of Publication | Editor | ||
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| Notes | Rapid Communication | Approved | no | ||
| Call Number | BT @ pedrazp @ 10.1103/PhysRevB.44.7737 | Serial | 543 | ||
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| Author | Esquinazi, P.; de la Cruz, M.E.; Ridner, A.; de la Cruz, F. | ||||
| Title |
Heat treatment effects in amorphous metals: Zr70Cu30 and La70Cu30 | Type | Journal Article | ||
| Year | 1982 | Publication | Solid State Communications | Abbreviated Journal | Solid State Commun. |
| Volume | 44 | Issue | 6 | Pages | 941-944 |
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| Abstract | We measured the electrical resistivity (4–300 K), superconducting critical temperature and thermal conductivity (0.5–7 K) of the amorphous metals Zr70Cu30 and La70Cu30. Heat treatments below crystallization temperature induced changes in these properties. In particular, in the first stage of the annealing of Zr70Cu30 there are systematic changes in the thermal conductivity and the critical temperature, while the electrical resistivity remains constant. We show that there is no simple correlation between the thermal conductivity processes in the low temperature and plateau regions. We also show that the thermal conductivity of as quenched La70Cu30 is typical of amorphous metals, contrary to information previously reported. | ||||
| Address | Centro Atómico Bariloche – Instituto Balseiro | ||||
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| ISSN | 0038-1098 | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | BT @ pedrazp @ | Serial | 529 | ||
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| Author | Esquinazi, P.; de la Cruz, M.E.; de la Cruz, F. | ||||
| Title |
Heat treatment effects in La70Cu30 amorphous system | Type | Journal Article | ||
| Year | 1981 | Publication | Physica B+C | Abbreviated Journal | |
| Volume | 108B | Issue | 1-3 | Pages | 1215-1216 |
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| Abstract | It is shown that superconductivity is a useful tool to investigate the evolution of the amorphous state, when heat treatment below the crystallization temperature. | ||||
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| ISSN | 0378-4363 | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | BT @ pedrazp @ | Serial | 530 | ||
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| Author | de la Cruz, F.; de la Cruz, M.E.; Civale, L.; Arce, R. | ||||
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Hybridization effects between d and s bans in amorphous materials | Type | Conference Article | ||
| Year | 1984 | Publication | Proceedings of LT-17 | Abbreviated Journal | |
| Volume | Issue | Pages | 1301 | ||
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| Publisher | Elsevier Science Publishers BV | Place of Publication | Editor | ||
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| Area | Expedition | Conference | LT-17 | ||
| Notes | Approved | no | |||
| Call Number | BT @ pedrazp @ | Serial | 812 | ||
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| Author | Luzuriaga, J.; D'Ovidio, C.; de la Cruz, F. | ||||
| Title |
Ideal two dimensional flux pinning induced by annealing in superconducting amorphous Zr75Rh25 | Type | Journal Article | ||
| Year | 1986 | Publication | Solid State Communications | Abbreviated Journal | Solid State Commun. |
| Volume | 57 | Issue | 9 | Pages | 753-756 |
| Keywords | ZIRCONIUM COMPOUNDS – Physical Properties; CRITICAL CURRENT; FLUX PINNING; MELT SPINNING; PINNING FORCES; SUPERCONDUCTING MATRIX; SUPERCONDUCTING MATERIALS | ||||
| 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. | ||||
| Address | Centro Atomico Bariloche, Instituto Balseiro, 8400 Bariloche, Argentina | ||||
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| ISSN | 00381098 (ISSN) | ISBN | Medium | ||
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| Notes | Export Date: 28 April 2009; Source: Scopus; CODEN: SSCOA; Language of Original Document: English; Correspondence Address: Luzuriaga, J.; Centro Atomico Bariloche; Instituto Balseiro 8400 Bariloche, Argentina | Approved | no | ||
| Call Number | BT @ luzuriag @ | Serial | 501 | ||
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| Author | Fasano, Y.; de Seta, M.; Menghini, M.; Pastoriza, H.; de la Cruz, F. | ||||
| Title |
Imaging the structure of the interface between symmetries interconnected by a discontinuous transition | Type | Journal Article | ||
| Year | 2003 | Publication | Solid State Communications | Abbreviated Journal | Solid State Commun. |
| Volume | 128 | Issue | 3-4 | Pages | 51-55 |
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| Abstract | We have been able to observe with single particle resolution the interface between two structural symmetries that cannot be interconnected by a continuous transition. By means of an engineered 2D potential that pins the extremity of vortex strings a square symmetry was imposed at the surface of a 3D vortex solid. Using the Bitter decoration technique and on account of the continuous vortex symmetry, we visualize how the induced structure transforms along the vortex direction before changing into the expected hexagonal structure at a finite distance from the surface. | ||||
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| Notes | Approved | no | |||
| Call Number | BT @ hernan @ fasano03a | Serial | 18 | ||
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