| Records |
| Author |
Civale, L.; de la Cruz, F. |
| Title |
Anomalous behavior of superconducting samples with a fixed number of vortices |
Type |
Journal Article |
| Year |
1987 |
Publication |
Physical Review B |
Abbreviated Journal |
Phys. Rev. B |
| Volume |
36 |
Issue  |
7 |
Pages |
3560-3564 |
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| Abstract |
We report an anomalous reversible temperature dependence of the magnetization of amorphous type-II superconductors. The experimental results were obtained studying the vortex pinning in samples with very low vortex concentration. The anomaly is shown to be a consequence of the lack of flux quantization in finite samples. |
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American Physical Society |
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BT @ pedrazp @ 10.1103/PhysRevB.36.3560 |
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566 |
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| Author |
Maloney, M.D.; de la Cruz, F.; Cardona, M. |
| Title |
Anomalous Behavior of Hc3/Hc2 near Tc for Sn-In and In-Bi Alloy Systems |
Type |
Journal Article |
| Year |
1970 |
Publication |
Physical Review B |
Abbreviated Journal |
Prb |
| Volume |
2 |
Issue |
7 |
Pages |
2512-2519 |
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American Physical Society |
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BT @ pedrazp @ 10.1103/PhysRevB.2.2512 |
Serial |
807 |
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| Author |
Safar, H.; Gammel, P.L.; Huse, D.A.; Majumdar, S.N.; Schneemeyer, L.F.; Bishop, D.J.; Lopez, D.; Nieva, G.L.; de la Cruz, F. |
| Title |
Observation of a nonlocal conductivity in the mixed state of YBa2Cu3O7-d: Experimental evidence for a vortex line liquid |
Type |
Journal Article |
| Year |
1994 |
Publication |
Physical Review Letters |
Abbreviated Journal |
Phys. Rev. Lett. |
| Volume |
72 |
Issue |
8 |
Pages |
1272 |
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| Abstract |
We report on transport measurements in the mixed state of YBa2Cu3O7 single crystals using the dc flux transformer geometry. In the vortex fluid regime we have observed the onset of a nonlocal conductivity. At lower temperatures, close to but above the phase transition temperature the vortices become effectively three dimensional in character. This is in sharp contrast to recent flux transformer experiments on Bi2Sr2CaCu2O which have failed to see a nonlocal conductivity, confirming the two-dimensional character at high temperatures of the vortices in that system. These observations suggest that in a finite temperature interval, the vortex state in YBa2Cu3O7 is a line liquid. |
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no |
| Call Number |
BT @ gnieva @ |
Serial |
443 |
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| Author |
Arce, R.; de la Cruz, F.; Fink, H.J. |
| Title |
Model relating superconductive penetration depth and metallurgical phase separation in amorphous La70Cu30 |
Type |
Journal Article |
| Year |
1982 |
Publication |
Solid State Communications |
Abbreviated Journal |
Solid State Commun. |
| Volume |
42 |
Issue |
8 |
Pages |
575-577 |
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| Abstract |
A model is proposed to account for the large increase in the measured penetration depth of superconducting, amorphous La70Cu30 when the specimens are annealed sufficiently long near, but below, the crystallization temperature. It is suggested that a metallurgical phase separation occurs with domain dimensions in the submicrometer range. Penetration depth measurements as a function of temperature in a weak magnetic field are a useful tool to detect changes in phase separation in high-K materials. |
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0038-1098 |
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no |
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BT @ pedrazp @ |
Serial |
567 |
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| Author |
Luzuriaga, J.; de la Cruz, F. |
| Title |
Reversible magnetization of surface superconductivity |
Type |
Journal Article |
| Year |
1978 |
Publication |
Solid State Communications |
Abbreviated Journal |
Solid State Commun |
| Volume |
25 |
Issue |
8 |
Pages |
605-607 |
| Keywords |
MAGNETIZATION; SUPERCONDUCTING MATERIALS |
| Abstract |
Direct measurements of the surface superconducting magnetization of the PbTl system shows that this state is a thermodynamic reversible one. |
| Address |
Centro Atómico Bariloche |
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00381098 (ISSN) |
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no |
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BT @ luzuriag @ |
Serial |
505 |
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| Author |
Correa, V.F.; Herbsommer, J.A.; Kaul, E.E.; de la Cruz, F.; Nieva, G. |
| Title |
Order-disorder transition and the zero-dimensional vortex pinning regime in Bi2Sr2CaCu2O8+delta |
Type |
Journal Article |
| Year |
2001 |
Publication |
PHYSICAL REVIEW B |
Abbreviated Journal |
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| Volume |
63 |
Issue |
9 |
Pages |
092502 |
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| Abstract |
We make a comparative study between the ab plane's dc critical current and the ac transverse magnetic permeability μ(perpendicular to) in the Campbell limit for optimally doped and overdoped Bi2Sr2CaCu2O8+delta samples. We focus attention on the low-temperature region [T/T-c(0) < 0.25], where the transition to the zero-dimensional Larkin limit is detected by the critical current as well as by a rapid change of the Labusch parameter with temperature. The order-disorder transition, characterized by the second peak in magnetization, disappears in the presence of this zero-dimensional pinning regime. |
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0163-1829 |
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ISI:000167312000016 |
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no |
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BT @ hernan @ |
Serial |
218 |
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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. |
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Centro Atomico Bariloche, Instituto Balseiro, 8400 Bariloche, Argentina |
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00381098 (ISSN) |
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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 |
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BT @ luzuriag @ |
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501 |
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| Author |
Maloney, M.D.; de la Cruz, F.; Cardona, M. |
| Title |
Superconducting Parameters and Size Effects of Aluminum Films and Foils |
Type |
Journal Article |
| Year |
1972 |
Publication |
Physical Review B |
Abbreviated Journal |
Prb |
| Volume |
5 |
Issue |
9 |
Pages |
3558-3572 |
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American Physical Society |
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no |
| Call Number |
BT @ pedrazp @ 10.1103/PhysRevB.5.3558 |
Serial |
804 |
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