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Vortex fluctuations and interlayer coupling in cuprates
DOI:10.1103/PhysRevB.53.2815.png)
摘要
En 中文
The reversible magnetization (M) curves of HgBa2Cam-1CumO2m+2+delta (m=1, 2, and 3) at different H cross at a temperature T* and M=M* as suggested by various two-dimensional (2D) vortes-fluctuation models. However, the obtained M*/T* was found to be independent of either m or the sheet density 1/s of the CuO2 blocks, where s is the size of the unit cell along the c axis, in contrast to the predictions of the models. A survey of published data shows a similar situation, i.e., M*/T* in either Bi- or Ti-based compounds is independent on s. This observation suggests that the coupling between neighboring CuO2 blocks may be non-negligible in its effects on the magnetization, and that modifications to the existing 2D fluctuation models need to be made.
Keyword:
II SUPERCONDUCTORS
MAGNETIZATION
BI2SR2CA2CU3O10
BI2SR2CACU2O8
TRANSITION
VORTICES
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期刊
IF:
3.7
论文数:
15.4W
被引数:
41.0W
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