Nonequilibrium superconductivity and quasiparticle dynamics in YBa/sub 2/Cu/sub 3/O/sub 7-/spl delta//

Author

Taylor, A.J. ; Rodriguez, G. ; Siders, J.L.W. ; Siders, C.W. ; Trugman, S.A.

Author_Institution

Div. of Mater. Sci. & Technol., Los Alamos Nat. Lab., NM, USA

fYear

1992

fDate

23-28 May 1992

Firstpage

118

Lastpage

119

Abstract

Summary form only given. We create a nonequilibrium distribution of quasiparticles in superconducting YBa/sub 2/Cu/sub 3/O/sub 7-/spl delta// (YBCO) thin films using 150-fs, 1.5-eV optical pulses. The subsequent interplay between the superfluid and quasiparticle dynamics is investigated with coherent terahertz (THz) spectroscopy with the ultimate goal of understanding the character of the excited quasiparticles, their decay channels and relaxation times.

Keywords

barium compounds; high-temperature superconductors; quasiparticles; submillimetre wave spectra; superconducting thin films; yttrium compounds; 1.5 eV; 150 fs; YBa/sub 2/Cu/sub 3/O/sub 7-/spl delta//; YBa/sub 2/Cu/sub 3/O/sub 7/; coherent THz spectroscopy; decay channels; eV optical pulses; excited quasiparticles; nonequilibrium quasi-particle distribution; nonequilibrium superconductivity; quasiparticle dynamics; relaxation times; superconducting thin films; superfluid; Delay; Fluid dynamics; Frequency; Optical films; Optical pumping; Probes; Pumps; Superconductivity; Temperature; Yttrium barium copper oxide;

fLanguage

English

Publisher

ieee

Conference_Titel

Quantum Electronics and Laser Science Conference, 1999. QELS '99. Technical Digest. Summaries of Papers Presented at the

Conference_Location

Baltimore, MD, USA

Print_ISBN

1-55752-576-X

Type

conf

DOI

10.1109/QELS.1999.807392

Filename

807392