Imaging of supercurrent distribution in YBCO thin films using THz radiation excited by femtosecond laser pulses

Author

Hangyo, Masanori ; Shikii, Shin-ichi ; Yamashita, Masatsugu ; Kondo, Takashi ; Tonouchi, Masayoshi ; Tani, Masahiko ; Sakai, Kiyomi

Author_Institution

Res. Center for Supercond. Mater. & Electron., Osaka Univ., Japan

fYear

1998

fDate

3-4 Sep 1998

Firstpage

38

Lastpage

41

Abstract

A new method of imaging supercurrent distribution in YBCO thin films has been proposed and demonstrated by using the radiation excited by femtosecond laser pulses. The characteristic distribution of the transport and persistent current in superconducting thin films is obtained and the result is discussed based on the Bean model

Keywords

barium compounds; current distribution; high-temperature superconductors; measurement by laser beam; submillimetre wave imaging; submillimetre wave measurement; superconducting thin films; yttrium compounds; Bean model; HTSC; THF; THz radiation; YBCO thin films; YBaCuO; critical state model; femtosecond laser pulses; noncontact method; superconducting thin films; supercurrent distribution imaging; EMP radiation effects; Laser excitation; Laser mode locking; Laser modes; Optical pulses; Superconducting films; Superconducting thin films; Transistors; Ultrafast electronics; Yttrium barium copper oxide;

fLanguage

English

Publisher

ieee

Conference_Titel

Terahertz Electronics Proceedings, 1998. THz Ninety Eight. 1998 IEEE Sixth International Conference on

Conference_Location

Leeds

Print_ISBN

0-7803-4903-2

Type

conf

DOI

10.1109/THZ.1998.731658

Filename

731658