Title :
Cooper pair breaking and superconducting state recovery dynamics in MgB/sub 2/ probed by time-resolved THz spectroscopy
Author :
Demsar, J. ; Averitt, R.D. ; Taylor, A.J. ; Kang, W.-N. ; Kim, H.J. ; Choi, E.-M. ; Lee, S.-I.
Author_Institution :
Los Alamos Nat. Lab., NM, USA
Abstract :
We measured the Cooper pair breaking and condensate recovery dynamics in MgB/sub 2/ by means of time-resolved optical pump-terahertz probe spectroscopy. The observed photoexcitation intensity dependence of Cooper-pair breaking is attributed to the presence of two superconducting gaps in MgB/sub 2/.
Keywords :
Cooper pairs; magnesium compounds; submillimetre wave spectra; superconducting energy gap; superconducting transitions; time resolved spectra; type II superconductors; Cooper pair breaking; MgB/sub 2/; condensate recovery dynamics; optical pump-terahertz probe spectroscopy; photoexcitation; superconducting gaps; superconducting state recovery dynamics; time-resolved THz spectroscopy; time-resolved spectroscopy; Conductivity; Laboratories; Magnesium compounds; Optical films; Optical pumping; Probes; Spectroscopy; Superconducting films; Temperature dependence; Ultrafast optics;
Conference_Titel :
Quantum Electronics and Laser Science, 2003. QELS. Postconference Digest
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-749-0
DOI :
10.1109/QELS.2003.237862
