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- URN to cite this document:
- urn:nbn:de:bvb:355-epub-170678
- DOI to cite this document:
- 10.5283/epub.17067
Alternative links to fulltext:DOI
Abstract
The resistance response of polycrystalline Tl2Ba2CaCu2O8 films to short laser pulses has been investigated for a wide range of far-infrared frequencies. For temperatures T ll Tc a drastic change in response time is observed at a critical frequency νc simeq 4 THz. The time constant increases from about 1 ns at ν < νc to 1 μs at ν > νc. The critical frequency is attributed to a superconducting energy gap with 2Δ(0)/kB Tc simeq 2.
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