Experimental fitting to the bipolaronic model of the normal-state resistance of Bi_2Sr_2CaCu_2O_8 single crystals

Abstract

Normal-state resistance data from Bi_2Sr_2CaCu_2O_8 single crystals were fitted to the (bi)polaronic conduction model, $R=R_0(T+{\sigma }_b{T}^2)/(1+bT)$, with satisfactory agreement over a wide temperature range. The fluctuating conduction region is found to be much narrower than that in the usual sense, as is the case for a charged Bose-gas. We estimate the effective (bi)polaron mass to be ~ 4m_e.

2 pages + 2 postscript figures. Submitted to M2S-HTSC-VI(Houston) Conference

References in corpus (3)

• Vanishing of phase coherence in underdoped Bi_2Sr_2CaCu_2O_8+d
• Mobile small polaron
• Resistive Transition and Upper Critical Field in Underdoped YBa_2Cu_3O_{6+x} Single Crystals

Cited by in corpus (4)

• Lorenz number in high Tc superconductors: evidence for bipolarons
• Bose-Einstein condensation of strongly correlated electrons and phonons in cuprate superconductors
• Hall effect and resistivity in underdoped cuprates
• Hall-Lorenz number paradox in cuprate superconductors