| Records |
| Author |
López, D.; Rodríguez, E.; Nieva, G.; de la Cruz, F.; Cheong, S. W. |
| Title |
Three-dimensional vortex flux flow in LSCO and YBCO through pseudo dc flux transformer measurements |
Type |
Journal Article |
| Year |
1994 |
Publication |
Physica B: Condensed Matter |
Abbreviated Journal |
Physica B |
Volume  |
194-196 |
Issue |
2 |
Pages |
1977-1978 |
| Keywords |
|
| 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. |
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
|
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
no |
| Call Number |
BT @ gnieva @ |
Serial |
442 |
| Permanent link to this record |
| |
|
| |
| Author |
de la Cruz, F.; Maloney, M.D.; Cardona, M. |
| Title |
Variation of the Ratio Hc3/Hc2 in the Immediate Vicinity of ${T}_{c}$ |
Type |
Journal Article |
| Year |
1969 |
Publication |
Physical Review |
Abbreviated Journal |
Pr |
| Volume |
187 |
Issue |
2 |
Pages |
766-767 |
| Keywords |
|
| Abstract |
|
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
American Physical Society |
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
|
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
no |
| Call Number |
BT @ pedrazp @ |
Serial |
805 |
| Permanent link to this record |
| |
|
| |
| Author |
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 |
Type |
Journal Article |
| Year |
1990 |
Publication |
Physica C: Superconductivity |
Abbreviated Journal |
Physica C |
| Volume |
165 |
Issue |
3-4 |
Pages |
315-320 |
| Keywords |
|
| Abstract |
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. |
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
0921-4534 |
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
ISI:A1990CN49800014 |
Approved |
no |
| Call Number |
BT @ hernan @ |
Serial |
261 |
| Permanent link to this record |
| |
|
| |
| Author |
de la Cruz, F.; de la Cruz, M.E.; Cotignola, J.M. |
| Title |
Longitudinal Magnetomorphic Effect in Indium Films |
Type |
Journal Article |
| Year |
1967 |
Publication |
Physical Review |
Abbreviated Journal |
Phys. Rev. |
| Volume |
163 |
Issue |
3 |
Pages |
575-578 |
| Keywords |
|
| Abstract |
|
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
American Physical Society |
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
|
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
no |
| Call Number |
BT @ pedrazp @ PhysRev.163.575 |
Serial |
537 |
| Permanent link to this record |
| |
|
| |
| 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 |
| Keywords |
|
| 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. |
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
0921-4534 |
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
no |
| Call Number |
BT @ jguimpel @ |
Serial |
626 |
| Permanent link to this record |
| |
|
| |
| 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 |
| Keywords |
|
| 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. |
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
|
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
no |
| Call Number |
BT @ hernan @ fasano03a |
Serial |
18 |
| Permanent link to this record |
| |
|
| |
| 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 |
| Keywords |
|
| 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. |
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
0378-4363 |
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
no |
| Call Number |
BT @ pedrazp @ |
Serial |
530 |
| Permanent link to this record |
| |
|
| |
| 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 |
| Keywords |
|
| 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. |
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
|
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
Proceedings of LT-16 |
Approved |
no |
| Call Number |
BT @ pedrazp @ |
Serial |
558 |
| Permanent link to this record |
| |
|
| |
| Author |
Grigera, S.A.; Morré, E.; Osquiguil, E.; Nieva, G.; De la Cruz, F. |
| Title |
Nonlocal transport properties and size effects in heavily twinned YBa2Cu3O7-delta single crystals |
Type |
Journal Article |
| Year |
1998 |
Publication |
Solid State Communications |
Abbreviated Journal |
Solid State Commun. |
| Volume |
107 |
Issue |
7 |
Pages |
335-339 |
| Keywords |
|
| Abstract |
We demonstrate experimentally that when the vortex correlation length in the liquid state becomes of the order of the sample thickness, size effects dominate the transport properties of the macroscopic vortex structures, implying a nonlocal response in the transformer experiments. |
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
0038-1098 |
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
ISI:000074907100004 |
Approved |
no |
| Call Number |
BT @ hernan @ |
Serial |
237 |
| Permanent link to this record |
| |
|
| |
| Author |
Bridoux, G.; Nieva, G.; de la Cruz, F. |
| Title |
Phase-coherence effects in vortex transport entropy |
Type |
Journal Article |
| Year |
2008 |
Publication |
PHYSICAL REVIEW LETTERS |
Abbreviated Journal |
|
| Volume |
101 |
Issue |
11 |
Pages |
117002 |
| Keywords |
|
| Abstract |
Nernst and electrical resistivity measurements in superconducting YBa2Cu3O7-delta and Bi2Sr2CaCu2O8+delta with and without columnar defects show a distinctive thermodynamics of the respective liquid vortex matter. At a field-dependent high temperature region in the H-T phase diagram, the Nernst signal is independent of structural defects in both materials. At lower temperatures, in YBa2Cu3O7-delta, defects contribute only to the vortex mobility, and the transport entropy is that of a system of vortex lines. The transition to lower temperatures in Bi2Sr2CaCu2O8+delta has a different origin; the maximum in the Nernst signal when decreasing temperature is not associated with transport properties but with the entropy behavior of pancake vortices in the presence of structural defects. |
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
0031-9007 |
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
ISI:000259188700052 |
Approved |
no |
| Call Number |
BT @ hernan @ |
Serial |
195 |
| Permanent link to this record |
