SUPERCONDUCTING ENERGY-GAP FROM INFRARED RESPONSE MEASUREMENTS IN ANTIGRANULOCYTES TL2BA2CACU2O8 FILMS

LENGFELLNER, H and SCHNEIDER, G and BETZ, J and HOGAN, M and PRETTL, W and RENK, KF (1991) SUPERCONDUCTING ENERGY-GAP FROM INFRARED RESPONSE MEASUREMENTS IN ANTIGRANULOCYTES TL2BA2CACU2O8 FILMS. EUROPHYSICS LETTERS, 15 (3). pp. 343-347. ISSN 0295-5075,

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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 << T(c) a drastic change in response time is observed at a critical frequency nu(c) congruent-to 4 THz. The time constant increases from about 1 ns at nu < nu(c) to 1 mu-s at nu > nu(c). The critical frequency is attributed to a superconducting energy gap with 2-DELTA(0)/k(B) T(c) congruent-to 2.

Item Type: Article
Uncontrolled Keywords: BA-CU-O; THIN-FILMS; OPTICAL-RESPONSE; REFLECTIVITY; YBA2CU3O7; STATE; CONDUCTIVITY; RADIATION; TL;
Depositing User: Dr. Gernot Deinzer
Last Modified: 19 Oct 2022 08:46
URI: https://pred.uni-regensburg.de/id/eprint/54989

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