Artificial chessboard like textured YBCO films
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- 作者：M.P. Lisitskiy ; C. Camerlingo ; L. Gozzelino ; F. Laviano ; M. Russo
- 关键词：Homo-biepitaxial YBCO film growth ; High Tc Josephson junction ; Magnetic field structure
- 刊名：Physica C
- 出版年：2007
- 出版时间：1 September 2007
- 年：2007
- 卷：460-462
- 期：Complete
- 页码：766-767
- 全文大小：163 K
文摘
A chessboard like structure of in-plane textured superconducting film with 4 × 4 μmp>2 p> elementary area has been fabricated by means of the homo-biepitaxial growing of YBCO film on yttria stabilized zirconia substrate. Regular arranged grain boundaries with fixed mismatch angle of 45° were realized. Each elemental square was connected to the four neighboring regions by π-Josephson junctions. Electro-physical properties of YBCO films with and without the chessboard like texture were measured. The magnetic field penetration into the chessboard like YBCO sample has been investigated by magneto-optical imaging at T = 4.2 K at different values of the applied magnetic field. The magneto-optical images have demonstrated the contribution of the grain-boundary superconducting transport to the formation of the magnetic field distribution inside the chessboard like sample.