Superconductivity in ultrathin artificial cuprate structures

被引：19
|
作者：
Balestrino, G [1 ]
Lavanga, S [1 ]
Medaglia, PG [1 ]
Orgiani, P [1 ]
Paoletti, A [1 ]
Pasquini, G [1 ]
Tebano, A [1 ]
Tucciarone, A [1 ]
机构：
[1] Univ Roma Tor Vergata, INFM, Dipartimento Sci & Tecnol Fis & Energet, I-00133 Rome, Italy
来源：
APPLIED PHYSICS LETTERS | 2001年 / 79卷 / 01期
关键词：
D O I：
10.1063/1.1383270
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Layer-by-layer pulsed-laser deposition has been used to grow ultrathin superconducting (Ba(0.9)Nd(0.1))CuO(2+x)/CaCuO(2) artificial structures with various thicknesses of the two constituent layers. Superconductivity was observed in the ultrathin structure consisting of a single CaCuO(2) superconducting block sandwiched between two (Ba(0.9)Nd(0.1))CuO(2+x) blocks. The results obtained allowed an experimental demonstration of the currently accepted structural model for high T(C) superconductivity, which requires the presence in the same structure of two blocks with different functional properties: the superconducting infinite layer block and the nonsuperconducting charge reservoir block. (C) 2001 American Institute of Physics.
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收藏
页码：99 / 101
页数：3
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