1.
Phys Rev Lett
; 90(14): 147001, 2003 Apr 11.
Artigo
em Inglês
| MEDLINE
| ID: mdl-12731938
RESUMO
We present a systematic study of the topology of the vortex solid phase in superconducting Bi2Sr2CaCu2O8 samples with low doses of columnar defects. A new state of vortex matter imposed by the presence of geometrical contours associated with the random distribution of columns is found. The results show that the first-order liquid-solid transition in this vortex matter does not require a structural symmetry change.