Title :
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
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;
Conference_Titel :
Terahertz Electronics Proceedings, 1998. THz Ninety Eight. 1998 IEEE Sixth International Conference on
Conference_Location :
Leeds
Print_ISBN :
0-7803-4903-2
DOI :
10.1109/THZ.1998.731658
