Title :
Observation of coherent superconducting gapexcitations in MgB/sub 2/
Author :
Aku-Leh, C. ; Eckhause, T.A. ; Bragas, A.V. ; Merlin, R. ; Zeng, X.H. ; Pogrebnyakov, A.V. ; Tenne, D.A. ; Xi, X.X.
Author_Institution :
Harrison M. Randall Lab. of Phys., Michigan Univ., Ann Arbor, MI
Abstract :
We report the observation of coherent superconducting gap oscillations in MgB2 films at 3 K using time-resolved spectroscopy. Oscillations at frequencies of 124 cm-1, 103 cm -1 and 56 cm-1 were observed. Spontaneous Raman spectra show a gap at 110 cm-1
Keywords :
Raman spectra; high-speed optical techniques; magnesium compounds; superconducting energy gap; superconducting thin films; type II superconductors; 3 K; MgB2; MgB2 films; coherent excitations; spontaneous Raman spectra; superconducting gap; superconducting gap oscillations; time-resolved spectroscopy;
Conference_Titel :
Quantum Electronics Conference, 2004. (IQEC). International
Conference_Location :
San Francisco, CA
Print_ISBN :
1-55752-778-4