COULOMB GAP AND CORRELATED VORTEX PINNING IN SUPERCONDUCTORS

被引：37
|
作者：
TAUBER, UC
DAI, HJ
NELSON, DR
LIEBER, CM
机构：
[1] HARVARD UNIV,DIV APPL SCI,CAMBRIDGE,MA 02138
[2] HARVARD UNIV,DEPT CHEM,CAMBRIDGE,MA 02138
来源：
PHYSICAL REVIEW LETTERS | 1995年 / 74卷 / 25期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1103/PhysRevLett.74.5132
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The positions of columnar pins and magnetic flux lines determined from a decoration experiment on Bi2Sr2CaCu2O8 were used to calculate the distribution of pinning energies in the Bose glass phase. A wide Coulomb gap is found, with effective gap exponent seff1.2, as a result of interactions between the vortices. As a consequence, the variable-range hopping transport of flux lines is considerably reduced with respect to the noninteracting case, the effective Mott exponent being enhanced from p0=1/3 to peff0.5 for this sample. © 1995 The American Physical Society.
引用
收藏
页码：5132 / 5135
页数：4
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