Observation of coherent superconducting gapexcitations in MgB/sub 2/

C. Aku-Leh,T. A. Eckhause,Andrea V. Bragas,R. Merlin,X. H. Zeng,A. V. Pogrebnyakov,D.A. Tenne,X. X. Xi

Observation of coherent superconducting gapexcitations in MgB/sub 2/

2004

C. Aku-Leh
T. A. Eckhause
Andrea V. Bragas
R. Merlin
X. H. Zeng
A. V. Pogrebnyakov
D.A. Tenne
X. X. Xi

We report the observation of coherent superconducting gap oscillations in MgB 2 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:

Spectroscopy
Raman spectroscopy
Time-resolved spectroscopy
Superconductivity
Nuclear magnetic resonance
Condensed matter physics
Band gap
Type-II superconductor
Chemistry
Oscillation
Fourier transform
Optical amplifier
Materials science

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