ISSN:
1572-9605
Keywords:
Cuprate superconductivity
;
superlattices
;
T c
;
dimensionality
Source:
Springer Online Journal Archives 1860-2000
Topics:
Electrical Engineering, Measurement and Control Technology
,
Physics
Notes:
Abstract 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 foundT 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 thatT c need not be reduced at heterostructure interfaces.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00617991
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