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Superconducting Energy Gap from Infrared Response Measurements in Granular Tl2Ba2CaCu2O8 Films

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
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
Identification Number:
ValueType
10.1209/0295-5075/15/3/019DOI
Classification:
NotationType
74.25.Nf; 74.81.Bd; 74.78.-wPACS
Keywords:Superconductivity
Dewey Decimal Classification:500 Science > 530 Physics
Status:Published
Refereed:Unknown
Created at the University of Regensburg:Unknown
Item ID:17067
Owner only: item control page

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