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| Author | López, D.; Righi, E. F.; Nieva, G.; de la Cruz, F. | ||||
| Title | Coincidence of Vortex-Lattice Melting and Loss of Vortex Correlation along the c Direction in Untwinned YBa2Cu3O7-δ Single Crystals | Type | Journal Article | ||
| Year | 1996 | Publication | Physical Review Letters | Abbreviated Journal | Phys. Rev. Lett. |
| Volume | 76 | Issue  |
Pages | 4034 | |
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| 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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| Notes | Approved | no | |||
| Call Number | BT @ gnieva @ | Serial | 448 | ||
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| Author | de la Cruz, F.; López, D.; Righi, E. F.; Nieva, G. | ||||
| Title | Comparative Study of Vortex Correlation in Twinned and Untwinned YBa2Cu3O7 Single Crystals | Type | Conference Article | ||
| Year | 1996 | Publication | Proceedings of the 10th Anniversary Hts Workshop on Physics, Materials and Applications | Abbreviated Journal | |
| Volume | Issue |
Pages | 395 | ||
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| Publisher | World Scientific Publishing Company | Place of Publication | Singapore | Editor | Batlogg, B. |
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| ISSN | ISBN | 9810227159 | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | BT @ gnieva @ | Serial | 461 | ||
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| Author | López, D.; Righi, E. F.; Nieva, G.; de la Cruz, F.; Kwok, W. K.; Fendrich, J. A.; Crabtree, G. W.; Paulius, L. | ||||
| Title | Discontinuous Onset of the c-axis Vortex Correlation at the Melting Transition in YBa2Cu3O7 | Type | Conference Article | ||
| Year | 1996 | Publication | Proceedings of the 10th Anniversary Hts Workshop on Physics, Materials and Applications | Abbreviated Journal | |
| Volume | Issue |
Pages | 411 | ||
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| Publisher | World Scientific Publishing Company | Place of Publication | Singapore | Editor | Batlogg, B. |
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| ISSN | ISBN | 9810227159 | Medium | ||
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| Notes | Approved | no | |||
| Call Number | BT @ gnieva @ | Serial | 462 | ||
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| Author | Righi, E. F.; Grigera, S. A.; Nieva, G.; de la Cruz, F. | ||||
| Title | Vortex phase coherence along the c axis in YBa2Cu3O7-d | Type | Journal Article | ||
| Year | 1998 | Publication | Superconduvtivity Reviews | Abbreviated Journal | |
| Volume | 2 | Issue |
Pages | 205 | |
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| Series Volume | Series Issue | Edition | |||
| ISSN | 1054-2698 | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | BT @ gnieva @ | Serial | 465 | ||
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| Author | Bressan, O.J.; Ridner, A.E.; de la Cruz, F. | ||||
| Title | Low angle electron scattering in thermal resistivity | Type | Journal Article | ||
| Year | 1975 | Publication | Journal of Physics F: Metal Physics | Abbreviated Journal | J. Phys. F: Met. Phys. |
| Volume | 5 | Issue |
Pages | 1902-1909 | |
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| Abstract | Electrical ( rho ) and thermal (W) resistivity measurements in very dilute In alloys between 1K and 4K show a temperature dependence expressed by rho = rho 0+ beta T5 and WT=(WT)0+AT3+BT5. The BT5 term in the thermal resistivity is due to a contribution from a 'diffusion-like process' of electrons over the Fermi surface, as is the one that describes the temperature dependence of the electrical resistivity. This claim is supported by the experimental fact that the Lorenz number defined as L= beta /B coincides with the value given by L= rho 0/(WT)0 which in turn agrees with the free electron value within 15%. | ||||
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| Notes | Approved | no | |||
| Call Number | BT @ pedrazp @ | Serial | 550 | ||
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| Author | Arce, R.; de la Cruz, F.; Esquinazi, P. | ||||
| Title | Superconducting penetration depth in amorphous La70Cu30 | Type | Journal Article | ||
| Year | 1981 | Publication | Physica B+C | Abbreviated Journal | |
| Volume | 108B | Issue |
Pages | 1253-1254 | |
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| Abstract | It is shown that weak field penetration depth measurements can be used to determine the change in the normal and superconducting behaviour of amorphous samples, when heat-treated below the crystallization temperature. The results are used to discuss the validity of BCS-Gorkov relations, when applied to these materials. | ||||
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| Notes | Proceedings of LT-16 | Approved | no | ||
| Call Number | BT @ pedrazp @ | Serial | 558 | ||
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| Author | de la Cruz, F.; Maloney, M.D.; Cardona, M. | ||||
| Title | Supercooling and superheating in Al and Zn | Type | Journal Article | ||
| Year | 1971 | Publication | Physica | Abbreviated Journal | |
| Volume | 55 | Issue |
Pages | 749-759 | |
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| Abstract | We have studied the supercooling and superheating of Al and Zn in the temperature range between 0.5 and 1.2 K. The samples, collections of dispersed and isolated small spheres, were prepared by spraying of the molten metal into liquid nitrogen. The supercooling and superheating fields obtained are, by all indications, close to the theoretical limit. From the supercooling fields observed we determined the Ginzburg-Landau parameter κ(Tc) = 0.015, for both Al and Zn. The superheating field exhibits a strong temperature dependence near Tc, which reflects the extremely non-local electrodynamics of the materials. The results are discussed in the light of recent theoretical work. | ||||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0031-8914 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | BT @ pedrazp @ | Serial | 809 | ||
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| Author | de la Cruz, F.; de la Cruz, M.E.; Civale, L.; Arce, R. | ||||
| Title | 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 | de la Cruz, F. | ||||
| Title | Structural relaxation: low temperature properties | Type | Conference Article | ||
| Year | 1984 | Publication | Abbreviated Journal | ||
| Volume | Issue |
Pages | 269 | ||
| Keywords | ALLOY SYSTEMS, AMORPHOUS STATE, COPPER ALLOYS, SUPERCONDUCTING COMPOSITES, TEMPERATURE DEPENDENCE, ZIRCONIUM BASE ALLOYS | ||||
| Abstract | We discuss the changes in transport and superconducting properties of amorphous Zr70Cu30, induced by thermal relaxation The experimental results are used to investigate the relation between the microscopic parameters and the observed physical properties It is shown that the density of eletronic states determines the shift Tc as well as the variation of the electrical resistivity It is necessary to assume strong hybridization between s and d bands to understand the eletrodynamic response of the superconductor (Author) |
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| Publisher | Place of Publication | Brazil | Editor | ||
| Language | Summary Language | Original Title | |||
| Series Editor | Series Title | Abbreviated Series Title | Proceedings of the Latin American Symposium of Physics of Amorphous Systems – v1 | ||
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| Notes | Approved | no | |||
| Call Number | BT @ pedrazp @ | Serial | 813 | ||
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| Author | Safar, H.; Durán, C.; Guimpel, J.; Civale, L.; Luzuriaga, J.; Rodríguez, E.; de la Cruz, F.; Fainstein, C.; Schneemeyer, L.F.; Waszczak, J.V. | ||||
| Title | Logarithmic to nonlogarithmic flux creep transition and magnetic flux hardening in BiSrCaCuO superconducting ceramics | Type | Journal Article | ||
| Year | 1989 | Publication | Physica C: Superconductivity | Abbreviated Journal | |
| Volume | 162-164, Part 1 | Issue |
Pages | 665-666 | |
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| Abstract | A sharp temperature and field dependent transition from a logarithmic to a non-logarithmic flux creep behavior has been found in BiSrCaCuO superconductors. The transition is not followed by any noticeable change in the magnetization. However, vibrating reed measurements show that it coincides with a strong hardening of the magnetic structure. The transition occurs at fields and temperatures well below the reversibility line. The possible relation to the recently proposed flux lattice melting is discussed. | ||||
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| ISSN | 0921-4534 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | BT @ jguimpel @ | Serial | 626 | ||
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