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Title: Noise signatures of metastable resistivity states in ferromagnetic insulating manganite

Pronounced noise signatures enabling one to discriminate metastable resistivity states in La{sub 0.86}Ca{sub 0.14}MnO{sub 3} single crystals have been observed. The normalized noise spectra for metastable resisitivity differ both in shape and magnitude, indicating that the metastable state is associated with transition of the electronic system into another local minimum of the potential landscape. Such scenario is consistent with freezing of the electronic system into a Coulomb glass state.
Authors:
 [1] ; ;  [2] ;  [3] ;  [2] ;  [4]
  1. Institute of Experimental Physics, Faculty of Physics, University of Warsaw, 02-093 Warsaw (Poland)
  2. Institute of Physics, Polish Academy of Sciences, 02-668 Warsaw (Poland)
  3. Department of Physics, Ben Gurion University of the Negev, 84105 Beer Sheva (Israel)
  4. (Israel)
Publication Date:
OSTI Identifier:
22494641
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 118; Journal Issue: 4; Other Information: (c) 2015 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; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COULOMB FIELD; FERROMAGNETIC MATERIALS; FREEZING; MANGANESE ALLOYS; METASTABLE STATES; MONOCRYSTALS; SPECTRA; SPIN GLASS STATE