Interlayer tunnelling mechanism: Experimental test of single layer compounds

AA Tsvetkov*, D van der Marel, D Dulic, HJ Molegraaf, NN Kolesnikov, B Willemsen, ZF Ren

*Bijbehorende auteur voor dit werk

Onderzoeksoutput: Conference contributionAcademicpeer review

4 Citaten (Scopus)

Samenvatting

The c-axis optical properties of cuprate superconductors have been studied by grazing angle reflectivity technique. We tested the interlayer tunnelling (ILT) model of high temperature superconductivity and showed that the basic relation between the condensation energy of the superconducting state and the interlayer Josephson coupling does not hold for Tl(2)Ba(2)CuO(6). Measuring the reflectivity at an oblique angle of incidence on the ab-surface of Tl(2)Ba(2)CuO(6), we found the c-axis plasma resonance at 28 cm(-1). The corresponding Josephson coupling energy is at least an order of magnitude lower than the condensation energy determined from the specific heat measurements. In the double layer compound Tl(2)Ba(2)CaCu(2)O(8) the c-axis plasma resonance was observed at 26 cm(-1). The c-axis penetration depth and the c-axis conductivity follow the Ambegaokar-Baratoff or "dirty limit" superconductor relation if a very small energy gap is assumed.

Originele taal-2English
TitelSuperconducting Superlattices II
Subtitel Native and Artificial
Redacteuren Bozovic, D Pavuna
Plaats van productieBELLINGHAM
UitgeverijSPIE - INT SOC OPTICAL ENGINEERING
Pagina's2-10
Aantal pagina's9
ISBN van geprinte versie0-8194-2935-X
DOI's
StatusPublished - 1998
EvenementConference on the Superconducting Superlattices II - Native and Artificial - , Canada
Duur: 20-jul.-199822-jul.-1998

Publicatie series

NaamProceedings of SPIE-The International Society for Optical Engineering
UitgeverijSPIE-INT SOC OPTICAL ENGINEERING
Volume3480
ISSN van geprinte versie0277-786X

Other

OtherConference on the Superconducting Superlattices II - Native and Artificial
Land/RegioCanada
Periode20/07/199822/07/1998

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