2004/12/24 by S. Dzhumanov, Dzhumanov, S., E. Dushanov +1
Physics and Astronomy · #FOS: Physical sciences #Superconductivity (cond-mat.supr-con) #cond-mat.supr-con
paper · pdf · doi:10.48550/arxiv.cond-mat/0412677
4 pages, 5 figures
arxiv created 2004/12/24 · arxiv updated 2009/12/01
We propose a possible scenario for the new metallic conductivity of underdoped and optimally doped cuprates. Charge carriers are assumed to be large polarons which form a Fermi-liquid and Cooper-like pairs below a crossover tempurature T∗. We use the Boltzmann equation to calculate the conductivity of self-trapped carriers and the resistivity ρ as a function of temperature and doping for different cuprates. We show that various anomalies in ρ(T) below T∗ are caused by the competing Fermi-liquid and BCS-like precursor pairing effects. Our results for ρ fit well with existing experiments and characterize high-Tc cuprates with an intermediate-coupling.