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Title: Comment on “A case study on the scaling of 1/f noise: La{sub 2∕3}Sr{sub 1∕3}MnO{sub 3} thin films” [J. Appl. Phys. 113, 094901 (2013)]

The problem of non-standard scaling of the 1/f noise in thin manganite films was revisited in the above paper, suggesting the quantum theory of fundamental flicker noise for the interpretation of the unusual dependence of the normalized Hooge parameter on the sample volume. Experimental evidence has been reported, showing that in these materials such volume dependence is, instead, an artifact of extrinsic noise sources, e.g., contact noise. Moreover, the proposed theoretical model implies a linear temperature dependence of the Hooge parameter, which is against the experimental data reported here. Based on these arguments, it is possible to conclude that the quantum theory of fundamental flicker noise cannot be applied to the case of La{sub 2∕3}Sr{sub 1∕3}MnO{sub 3} thin films.
Authors:
;  [1] ; ; ;  [2]
  1. Dipartimento di Fisica “E.R. Caianiello” and CNR-SPIN Salerno, Università di Salerno, I-84084 Fisciano, Salerno (Italy)
  2. GREYC, UMR 6072, CNRS-ENSICAEN-Université de Caen Basse Normandie, 14050 Caen (France)
Publication Date:
OSTI Identifier:
22271221
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; LANTHANUM COMPOUNDS; MANGANATES; MATHEMATICAL MODELS; NOISE; STRONTIUM COMPOUNDS; TEMPERATURE DEPENDENCE; THIN FILMS