Temperature-dependent electric noise level in different iron-based superconductors

11th European Conference on Applied Superconductivity

Barone, C.^1 ; Pagano, S.^1 ; Bellingeri, E.^2 ; Ferdeghini, C.^2 ; Adamo, M.^3 ; Sarnelli, E.^3 ; Kurth, F.^4 ; Holzapfel, B.^4 ; Iida, K.^4

Dipartimento di Fisica e.R. Caianiello, CNR-SPIN Salerno, Università di Salerno, Fisciano, Salerno

I-84084, Italy^1

CNR-SPIN Genova, corso Perrone 24, Genova

I-16152, Italy^2

CNR-ICIB, Via Campi Flegrei 34, Pozzuoli, Napoli

I-80078, Italy^3

Leibniz-Institut für Festkörper- und Werkstoffforschung (IFW) Dresden, PO Box 270116, Dresden

01171, Germany^4

关键词: Electric noise;    Electric transport properties;    Epitaxial thin films;    Temperature dependencies;    Temperature dependent;    Two-materials;    Voltage noise;    Voltage spectral density;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/507/1/012002/pdf
DOI  :  10.1088/1742-6596/507/1/012002

来源: IOP

【 摘 要 】

A detailed characterization of the voltage-noise properties has been performed in FeTe0.5Se0.5epitaxial thin films and Co-doped BaFe2As2bilayers, deposited by pulsed laser deposition. In all the samples analyzed, the experimental voltage-spectral density has a 1/f noise component. Different behaviors are observed for the bias current and temperature dependencies of this 1/f noise, and are related to specific structural and electric transport properties of the two materials.