Effect of nonstoichiometric disorder on the Hall coefficient in electron-doped Nd2−xCexCuO4+δ single crystal films

Hall effect and magnetoresistivity measured in magnetic fields up to B=9T (B∥c,J∥ab) in electron-doped Nd2−xCexCuO4+δ single crystal films with x=0.14; 0.15 and different oxygen content (δ) were studied in a temperature range of 0.4–40K. It was found that for the optimally doped Nd2−xCexCuO4+δ (x=0....

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Bibliographic Details
Published in:Physica. C, Superconductivity Superconductivity, 2010-12, Vol.470 (SUP1), p.S221-S222
Main Authors: Charikova, T.B., Shelushinina, N.G., Harus, G.I., Karskanov, I.V., Sochinskaya, O.E., Ivanov, A.A.
Format: Article
Language:English
Subjects:
Cuprate superconductors
Hall effect
Transport properties
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Summary:Hall effect and magnetoresistivity measured in magnetic fields up to B=9T (B∥c,J∥ab) in electron-doped Nd2−xCexCuO4+δ single crystal films with x=0.14; 0.15 and different oxygen content (δ) were studied in a temperature range of 0.4–40K. It was found that for the optimally doped Nd2−xCexCuO4+δ (x=0.15) the heat treatment (annealing) under various conditions leads to the decrease of the disorder parameter, charge carriers delocalization and considerable increase of the mean free path. On the other hand, charge carriers concentration and mean free path were practically independent on the heat treatment conditions for underdoped compounds (x=0.14).
ISSN:0921-4534
1873-2143
DOI:10.1016/j.physc.2009.11.055