Transport properties of very overdoped nonsuperconducting Bi 2 Sr 2 Cu O 6 + δ thin films - Université Paris-Saclay Access content directly
Journal Articles Physical Review B Year : 2022

Transport properties of very overdoped nonsuperconducting Bi 2 Sr 2 Cu O 6 + δ thin films

Abstract

The transport properties, resistance, Hall effect, and low T magnetoresistance for very oxygen overdoped nonsuperconducting Bi2Sr2CuO6+d (Bi2201) thin films are reported. From 20 to 300K, the temperature dependence of the resistance is well described by a law of the form a+bT 4/3 , theoretically predicted to occur in the presence of ferromagnetic fluctuations. In addition, this prediction is reinforced by the analysis of the transverse and the longitudinal low T magnetoresistance. Interestingly, the presence of a weak disorder causing low T electronic localization allows us to evidence very short diffusion lengths, as observed in other systems with ferromagnetic fluctuations.
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Dates and versions

hal-04066452 , version 1 (12-04-2023)

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H. Raffy, Z. Z. Li, P. Auban-Senzier. Transport properties of very overdoped nonsuperconducting Bi 2 Sr 2 Cu O 6 + δ thin films. Physical Review B, 2022, 106 (22), pp.224503. ⟨10.1103/PhysRevB.106.224503⟩. ⟨hal-04066452⟩
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