Coherence of polaronic transport in layered metals

Abstract

Layered systems shows anisotropic transport properties. The interlayer conductivity show a general temperature dependence for a wide class of materials. This can be understood if conduction occurs in two different channels activated at different temperatures. We show that the characteristic temperature dependence can be explained using a polaron model for the transport. The results show an intuitive interpretation in terms of coherent and incoherent quasi-particles within the layers. Further, we extract results for the magnetoresistance, thermopower, spectral function and optical conductivity for the model and discuss application to experiments.

arXiv comment13 pages, long version of Phys. Rev. B 68, 081101(R) (2003)

References in corpus (20)

• High Temperature Thermopower in La_{2/3}Ca_{1/3}MnO_3 Films: Evidence for Polaronic Transport
• Carrier Density Collapse and Colossal Magnetoresistance in Doped Manganites
• Charge Ordering and Polaron Formation in the Magnetoresistive Oxide La0.7Ca0.3MnO3
• Transport properties of strongly correlated metals:a dynamical mean-field approach
• Dynamical mean-field theory of the small polaron
• Coherence-Incoherence and Dimensional Crossover in Layered Strongly Correlated Metals
• Comparison of coherent and weakly incoherent transport models for the interlayer magnetoresistance of layered Fermi liquids
• Cosmic Microwave Background anisotropies from second order gravitational perturbations
• Direct Observation of High-Temperature Polaronic Behavior In Colossal Magnetoresistive Manganites
• Theory of Colossal Magnetoresistance in Doped Manganites
• Hall effect and conduction anisotropy in the organic conductor TMTSF2PF6
• Evidence for novel polaronic Fermi-liquid in doped oxides
• Quasi-linear magnetoresistance in an almost 2D band structure
• Small-polaron hopping conductivity in bilayer manganite La${}_{1.2}$Sr${}_{1.8}$Mn${}_2$O${}_7$
• Normal-state resistivity anisotropy in underdoped RBa_2Cu_3O_{6+x} crystals
• Indications of coherence-incoherence crossover in layered transport
• Magnetothemopower study of quasi two-dimensional organic conductor $\alpha$-(BEDT-TTF)${}_2$KHg(SCN)${}_4$
• Mixed-phase description of colossal magnetoresistive manganites
• Interlayer hopping properties of electrons in layered metals
• Small polarons and c-axis transport in highly anisotropic metals

Cited by in corpus (1)

• Holographic Polarons, the Metal-Insulator Transition and Massive Gravity