What Can Electric Noise Spectroscopy Tell Us on the Physics of Perovskites?

Coatings

卷:11

Carlo Barone¹  Sergio Pagano¹ 

[1] Dipartimento di Fisica “E.R. Caianiello”, Università degli Studi di Salerno, I-84084 Fisciano, Salerno, Italy;

关键词: noise spectroscopy;    magnetoresistance;    thin films;    quantum interference effects;    charge density waves;   

DOI  :  10.3390/coatings11010096

来源: DOAJ

【 摘 要 】

Electric noise spectroscopy is a non-destructive and a very sensitive method for studying the dynamic behaviors of the charge carriers and the kinetic processes in several condensed matter systems, with no limitation on operating temperatures. This technique has been extensively used to investigate several perovskite compounds, manganese oxides (La_1−xSr_xMnO₃, La_0.7Ba_0.3MnO₃, and Pr_0.7Ca_0.3MnO₃), and a double perovskite (Sr₂FeMoO₆), whose properties have recently attracted great attention. In this work are reported the results from a detailed electrical transport and noise characterizations for each of the above cited materials, and they are interpreted in terms of specific physical models, evidencing peculiar properties, such as quantum interference effects and charge density waves.

【 授权许可】

Unknown