Please use this identifier to cite or link to this item:
|Type:||Artigo de periódico|
|Title:||MAGNETIC-RELAXATION AND INTRINSIC PINNING IN A SINGLE-CRYSTAL OF BI2SR2CACU2OX|
|Abstract:||Magnetic-relaxation experiments were performed on Bi2Sr2CaCu2Ox Single crystals with the direction of the field parallel to the ab plane. Based on the relaxation data, we have obtained relationships between the activation energy U and the current density j by an approach we developed previously. We found that the activation energy has a logarithmic dependence on j in a wide regime of driving force. It has been reported that CuO2 planes in high-T(c) superconductors can act as strong intrinsic pinning centers and that the relation U approximately U0ln(j(c)/j) may describe such a pinning mechanism. Our experimental results have shown good agreement with such a physical model of intrinsic flux pinning.|
|Editor:||American Physical Soc|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.