| Records |
| Author |
Lopez, D.; Righi, E. F.; Nieva, G.; de la Cruz, F.; Kwok, W. K.; Fendrich, J. A.; Crabtree, G. W.; Paulius, L. |
Title  |
Amplification of the c-axis vortex correlation by twin-boundary pinning at the vortex liquid-solid phase transition |
Type |
Journal Article |
| Year |
1996 |
Publication |
PHYSICAL REVIEW B |
Abbreviated Journal |
Phys. Rev. B |
| Volume |
53 |
Issue |
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Pages |
R8895 |
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| Abstract |
Transport measurements using the dc flux transformer configuration together with c-axis resistance data in clean and twinned YBa2Cu3O7-δ single crystals show that vortices are localized by the twin-boundary potential. The results support the existence of a divergent tilt modulus [D. R. Nelson and V. M. Vinokur, Phys. Rev. B 48, 13 060 (1993)] in a liquid that freezes into a Bose glass |
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BT @ gnieva @ |
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447 |
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| Author |
Bridoux, G.; Pedrazzini, P.; de la Cruz, F.; Nieva, G. |
| Title |
Angular field dependence of the Nernst effect in Bi2Sr2CaCu2O8+delta |
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Journal Article |
| Year |
2007 |
Publication |
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS |
Abbreviated Journal |
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| Volume |
460 |
Issue |
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Pages |
841-842 |
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| Abstract |
The anomalous Nernst effect in hole-doped cuprates has been interpreted in terms of the existence of a superconducting order parameter well above the transition temperature, T-c(H). In order to improve the understanding of this problem, we have measured the angular field dependence of the Nernst signal in Bi2Sr2CaCu2O8+delta single crystals. The experiment was done tilting the magnetic field with respect to the direction of the temperature gradient, above and below T,(H), with applied fields up to 16 T. We have found that all the curves are scaled on one curve against the reduced field Hcos theta at a fixed temperature. (c) 2007 Elsevier B.V. All rights reserved. |
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0921-4534 |
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ISI:000249870600060 |
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no |
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BT @ hernan @ |
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198 |
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Morré, E.; Grigera, S.; Osquiguil, E.; Nieva, G.; de la Cruz, F. |
| Title |
Angular restrictions on the glass transition and on the c-axis correlated liquid phase in twinned YBa2Cu3O7-? |
Type |
Journal Article |
| Year |
1997 |
Publication |
Physics Letters A |
Abbreviated Journal |
Phys. Lett. A |
| Volume |
233 |
Issue |
1-2 |
Pages |
130-134 |
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We have measured the angular dependence of the vortex velocity correlation temperature Tth(H) in twinned YBa2Cu3O7-? single crystals. The data show that the c-axis correlated vortex liquid phase exists up to angles much larger than expected within a single vortex pinning picture. Despite this, the second-order solid-liquid glass transition is shown to be restricted only to external magnetic fields applied within a few degrees from the c-axis direction. |
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Centro Atómico Bariloche |
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03759601 |
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Cited By (since 1996): 13; Export Date: 17 April 2009; Source: Scopus; CODEN: PYLAA; Language of Original Document: English; Correspondence Address: Morr |
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BT @ osquigui @ |
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381 |
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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 |
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Journal Article |
| Year |
1970 |
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Physical Review B |
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Prb |
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2 |
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7 |
Pages |
2512-2519 |
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American Physical Society |
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BT @ pedrazp @ 10.1103/PhysRevB.2.2512 |
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807 |
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| Author |
Civale, L.; de la Cruz, F. |
| Title |
Anomalous behavior of superconducting samples with a fixed number of vortices |
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Journal Article |
| Year |
1987 |
Publication |
Physical Review B |
Abbreviated Journal |
Phys. Rev. B |
| Volume |
36 |
Issue |
7 |
Pages |
3560-3564 |
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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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Rodríguez, E.; Duran, C.; Luzuriaga, J.; de la Cruz, F.; Fainstein, C. |
| Title |
Anomalous behaviour of the vortex structure in Bi4Ca2Sr4Cu4O16+y measured with a vibrating reed at low magnetic fields |
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Journal Article |
| Year |
1990 |
Publication |
Physica C: Superconductivity |
Abbreviated Journal |
Physica C |
| Volume |
165 |
Issue |
3-4 |
Pages |
315-320 |
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The response of the vortex structure in ceramic samples of Bi4Ca2Sr4Cu4O16+y has been measured by means of a vibrating reed technique in magnetic fields below 0.2 T. An anomally in the response of the reed is seen at temperatures of around 30 to 40 K, well below the critical temperature, indicating a transition similar to that attributed to a melting of the Flux Line Lattice. There is a shift in the temperature at which the anomaly is detected when one increases the driving force on the reed, while the dissipation shows a maximum associated to the transition which scales with the square of the applied magnetic field. Comparison with magnetization measurements shows that there is non-zero critical current at the same temperature where the anomalous behaviour is detected with our technique. |
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0921-4534 |
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ISI:A1990CN49800014 |
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no |
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BT @ hernan @ |
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261 |
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| Author |
Grigera, S.A.; Morre, E.; Osquiguil, E.; Balseiro, C.; Nieva, G.; de la Cruz, F. |
| Title |
Bose-glass phase in twinned YBa2Cu3O7-delta |
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Journal Article |
| Year |
1998 |
Publication |
PHYSICAL REVIEW LETTERS |
Abbreviated Journal |
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81 |
Issue |
11 |
Pages |
2348-2351 |
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Using an extensive scaling analysis of the transport properties in twinned YBa2Cu3O7-delta crystals we have experimentally found the predicted change in the universality class of the Bose-glass to liquid transition when the magnetic field is applied at small angles away from the direction of the correlated defects. The new dynamical critical exponent is s' = 1.1 +/- 0.3. |
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0031-9007 |
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ISI:000075897300042 |
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no |
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BT @ hernan @ |
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235 |
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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 |
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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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no |
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BT @ gnieva @ |
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448 |
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| Author |
Maiorov, B.; Silhanek, A.V.; De la Cruz, F.; Osquiguil, E. |
| Title |
Comment on “strong vortex liquid correlation from multiterminal measurements on untwinned YBa2Cu3O7-? single crystals” |
Type |
Journal Article |
| Year |
2002 |
Publication |
Physical Review Letters |
Abbreviated Journal |
Phys Rev Lett |
| Volume |
88 |
Issue |
13 |
Pages |
1397031 |
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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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Centro At |
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00319007 (ISSN) |
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Cited By (since 1996): 2; Export Date: 17 April 2009; Source: Scopus; CODEN: PRLTA; Language of Original Document: English; Correspondence Address: Maiorov, B.; Centro At |
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no |
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BT @ osquigui @ |
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368 |
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Maiorov, B.; Silhanek, A.V.; De la Cruz, F.; Osquiguil, E.; Rydh, A.; Rapp, |
| Title |
Comment on “strong vortex liquid correlation from multiterminal measurements on untwinned YBa2Cu3O7-? single crystals” [2] (multiple letters) |
Type |
Journal Article |
| Year |
2002 |
Publication |
Physical Review Letters |
Abbreviated Journal |
Phys Rev Lett |
| Volume |
88 |
Issue |
13 |
Pages |
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Current voltage characteristics; Electric potential; Extrapolation; Magnetic fields; Melting; Twinning; Vortex flow; Yttrium barium copper oxides; Multiterminal measurements; Single crystals |
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00319007 (ISSN) |
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Export Date: 17 April 2009; Source: Scopus; CODEN: PRLTA; Language of Original Document: English; Correspondence Address: Maiorov, B.; Centro At |
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no |
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BT @ osquigui @ |
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369 |
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