We reconsider transport experiments in strongly anisotropic high-T-c superconducting cuprates and we find that the universal Aslamazov-Larkin paraconductivity in two dimensions is surprisingly robust, even in the underdoped regime below the pseudogap crossover temperature T (*). We also establish that the underlying normal-state resistivity in the pseudogap region is (almost) linear in temperature, with all the deviations being quantitatively accounted for by Aslamazov-Larkin paraconductivity. The disappearance of paraconductivity is ruled by the suppression of Gaussian pair fluctuations at an energy scale related to T (*).

Extended paraconductivity regime in underdoped cuprates / Caprara, Sergio; Grilli, Marco; B., Leridon; J., Lesueur. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - 72:10(2005), pp. 104509-1-104509-6. [10.1103/physrevb.72.104509]

Extended paraconductivity regime in underdoped cuprates

CAPRARA, SERGIO;GRILLI, Marco;
2005

Abstract

We reconsider transport experiments in strongly anisotropic high-T-c superconducting cuprates and we find that the universal Aslamazov-Larkin paraconductivity in two dimensions is surprisingly robust, even in the underdoped regime below the pseudogap crossover temperature T (*). We also establish that the underlying normal-state resistivity in the pseudogap region is (almost) linear in temperature, with all the deviations being quantitatively accounted for by Aslamazov-Larkin paraconductivity. The disappearance of paraconductivity is ruled by the suppression of Gaussian pair fluctuations at an energy scale related to T (*).
2005
01 Pubblicazione su rivista::01a Articolo in rivista
Extended paraconductivity regime in underdoped cuprates / Caprara, Sergio; Grilli, Marco; B., Leridon; J., Lesueur. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - 72:10(2005), pp. 104509-1-104509-6. [10.1103/physrevb.72.104509]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/234787
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