1.
Phys Rev Lett
; 85(21): 4594-7, 2000 Nov 20.
Artigo
em Inglês
| MEDLINE
| ID: mdl-11082604
RESUMO
We report on transport measurements of YBa 2Cu 3O (7-delta) single crystals with different oxygen contents in the geometry B, J ||ab (J perpendicularB). Our data show that the vortices become confined between the Cu-O planes below a well-defined temperature at which the effective size 2xi of the vortex core is approximately equal to the period of the Cu-O layers. This confinement strongly increases the vortex liquid freezing temperature. A new melting line is found separating a vortex liquid and a smectic phase, which shows an oscillatory field dependence reflecting differences between commensurate and incommensurate smectic states.
2.
Phys Rev B Condens Matter
; 50(10): 7016-7025, 1994 Sep 01.
Artigo
em Inglês
| MEDLINE
| ID: mdl-9974658
3.
Phys Rev B Condens Matter
; 49(21): 15420-15423, 1994 Jun 01.
Artigo
em Inglês
| MEDLINE
| ID: mdl-10010670