SUPERCONDUCTING PROPERTIES OF ULTRATHIN FILMS OF YBA2CU3OX PREPARED BY METALORGANIC CHEMICAL-VAPOR-DEPOSITION AT 500-DEGREES-C

被引：12
作者：
ZAMA, H [1 ]
SAGA, J [1 ]
HATTORI, T [1 ]
ODA, S [1 ]
机构：
[1] MUSASHI INST TECHNOL,DEPT ELECT & ELECTR ENGN,SETAGAYA KU,TOKYO 158,JAPAN
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 1994年 / 33卷 / 3A期
关键词：
METALORGANIC CHEMICAL VAPOR DEPOSITION; MOCVD; LOW-TEMPERATURE GROWTH; YBA2CU3OX; ULTRATHIN FILMS; N2O; SUPERCONDUCTIVITY CRITICAL TEMPERATURE; SUPERCONDUCTING MONOMOLECULAR LAYER;
D O I：
10.1143/JJAP.33.L312
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Low-temperature (500-degrees-C) growth of YBa2Cu3Ox films by metaloganic chemical vapor deposition on (100)MgO substrates using N2O as an oxidizing agent has been investigated. Films 12 unit cells thick show superconducting onset critical temperature of 89 K and zero-resistivity critical temperature of 80 K. Films 4 unit cells thick show T(c)(zero) of 30 K. Films as thin as 3 unit ells thick reveal superconducting onset characteristics. If the topmost (cap) layer and the bottom (buffer) layer are nonsuperconducting, this result suggests that superconductivity arises even from monomolecular layer of YBa2Cu3Ox.
引用
收藏
页码：L312 / L314
页数：3
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