Fermi system with planes and charge reservoir: Anisotropic in-plane resistivity
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Abstract
We explore the normal state in-plane resistivity of a model Fermi system with two planes and a charge reservoir. When the Fermi energy lies near the top of one of the resulting sub-bands, the system can be described by two types of quasiparticle excitations with different energy spectra and relaxation times. We show that for certain stoichiometry, ρab is linear in temperature with positive or negative intercepts. A relation between the slopes and intercepts of resistivities in the a and b directions in untwinned crystals is derived. The results are in good agreement with experimental data on YBCO.
Keywords
Experimental Data Relaxation Time Normal State Energy Spectrum Magnetic Material
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© Plenum Publishing Corporation 1992