The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 07, 2002
Filed:
Oct. 11, 2000
Applicant:
Inventors:
Hirokazu Kugai, Itami, JP;
Yasuyuki Matsui, Itami, JP;
Tatsuoki Nagaishi, Itami, JP;
Hideo Itozaki, Itami, JP;
Assignee:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 2/906 ;
U.S. Cl.
CPC ...
H01L 2/906 ;
Abstract
A superconducting thin film pattern ( ) formed from an oxide superconducting thin film is formed on a sapphire substrate ( ) having a step ( ) via a CeO buffer layer, and the step ( ) and superconducting thin film pattern ( ) are formed such that the step ( ) crosses a predetermined portion of a square thin film pattern ( ) having an opening portion ( ) at the central portion. Step-edge Josephson junctions ( ) are formed at the portion crossed by the step ( ), and a SQUID is obtained. The sapphire substrate is relatively inexpensive, and a large substrate can be used.