Experimental fitting to the bipolaronic model of the normal-state resistance of Bi2Sr2CaCu2O8 single crystals
Abstract
Normal-state resistance data from Bi2Sr2CaCu2O8 single crystals were fitted to the (bi)polaronic conduction model, R=R0 (T+σb T2)/(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 ~ 4me.
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