SUPERCONDUCTIVITY IN EPITAXIAL BI2SR2CUO6/BI2SR2CACU2O8 SUPERLATTICES - THE SUPERCONDUCTING BEHAVIOR OF ULTRATHIN CUPRATE SLABS

被引:68
作者
BOZOVIC, I
ECKSTEIN, JN
KLAUSMEIERBROWN, ME
VIRSHUP, G
机构
[1] Varian Research Center, Palo Alto, 94304-1025, California
来源
JOURNAL OF SUPERCONDUCTIVITY | 1992年 / 5卷 / 01期
关键词
CUPRATE SUPERCONDUCTIVITY; SUPERLATTICES; TC; DIMENSIONALITY;
D O I
10.1007/BF00617991
中图分类号
O59 [应用物理学];
学科分类号
摘要
Utilizing atomic layer-by-layer molecular beam epitaxy (ALL-MBE), we have synthesized a series of high-quality superlattices in which ultrathin slabs (one-half unit cell thick) of the high-T(c) superconductor Bi2Sr2CaCu2O8 alternate with up to five such layers of the low-T(c) Bi2Sr2Cu1O6 phase. In all these superlattices we found T(c) to be essentially equal to that of the high-T(c) Bi2Sr2CaCu2O8 Phase itself, which indicates that this cuprate is a 2D superconductor insofar as the interslab coupling plays at best a secondary role. Furthermore, it is demonstrated that T(c) need not be reduced at heterostructure interfaces.
引用
收藏
页码:19 / 23
页数:5
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