Title :
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
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;
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
DOI :
10.1109/QELS.1999.807392
