Lengfellner, Hans, Schneider, G., Betz, J., Hogan, M., Prettl, Wilhelm and Renk, Karl Friedrich (1991) Superconducting Energy Gap from Infrared Response Measurements in Granular Tl2Ba2CaCu2O8 Films. Europhysics Letters 15 (3), pp. 343-347.
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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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| Item type: | Article | ||||
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| Date: | 1 June 1991 | ||||
| Institutions: | Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Hans Lengfellner Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Wilhelm Prettl | ||||
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| Keywords: | Superconductivity | ||||
| Dewey Decimal Classification: | 500 Science > 530 Physics | ||||
| Status: | Published | ||||
| Refereed: | Unknown | ||||
| Created at the University of Regensburg: | Unknown | ||||
| Item ID: | 17067 |
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