Physics – Condensed Matter – Superconductivity
Scientific paper
1997-01-06
Physics
Condensed Matter
Superconductivity
3 pages, 2 figures, Proceedings of Spectroscopies of Novel Superconductors '97, To be published in J. Phys. Chem. Solids
Scientific paper
10.1016/S0022-3697(98)00102-4
A simplified model of c axis transport in the high T_c superconductors is presented. Expressions are found for the c axis optical conductivity, the d.c. resistivity, and the c axis penetration depth. Within the framework of this model, the pseudogap in the optical conductivity arises naturally as a result of the layered band structure of the high T_c materials. We discuss the occurence of the pseudogap in terms of three parameters: a band gap Delta_{ps}, a temperature dependent scattering rate Gamma(T), and the strength of the interlayer coupling t_{perp}. We are also able to find analytic expressions for the d.c. conductivity and the low temperature penetration depth in terms of these three parameters. This work is an attempt to present a simple, unified picture of c axis properties in the high T_c cuprates.
Atkinson W. A.
Carbotte Jules P.
Wu Way-Chen
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