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Aging Effect on Electrical Conductivity of Pure and Al-Doped YBa2Cu3O7−δ Single Crystals with a Given Topology of Planar Defects
Joint Authors
Vovk, Ruslan V.
Vovk, Nikolaj R.
Dobrovolskiy, Oleksandr V.
Source
Advances in Condensed Matter Physics
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-11-13
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
The conducting properties in the basal ab plane of pure and Al-doped YBa2Cu3O7-δ single crystals before and after long-time exposure in air atmosphere are investigated.
It is shown that prolonged aging leads to an increase of the density of effective scattering centers for the normal carriers.
The aluminum doping has been revealed to partially slowdown the degradation of the conducting properties in process of aging.
The excess conductivity, Δσ(T), has been found to obey exponential dependence in the broad temperature range Tc In the pseudogap regime, the mean-field transition temperature T* and the 3D-2D crossover point in the excess conductivity have been quantified. Near the critical temperature, Δσ(T) is described well within the Aslamazov-Larkin theoretical model. Herewith, both aluminum doping and prolonged aging have been found to essentially expand the temperature interval of implementation of the pseudogap state, thus narrowing the linear section in the dependence ρab(T).
American Psychological Association (APA)
Vovk, Ruslan V.& Vovk, Nikolaj R.& Dobrovolskiy, Oleksandr V.. 2013. Aging Effect on Electrical Conductivity of Pure and Al-Doped YBa2Cu3O7−δ Single Crystals with a Given Topology of Planar Defects. Advances in Condensed Matter Physics،Vol. 2013, no. 2013, pp.1-7.
https://search.emarefa.net/detail/BIM-1003196
Modern Language Association (MLA)
Vovk, Ruslan V.…[et al.]. Aging Effect on Electrical Conductivity of Pure and Al-Doped YBa2Cu3O7−δ Single Crystals with a Given Topology of Planar Defects. Advances in Condensed Matter Physics No. 2013 (2013), pp.1-7.
https://search.emarefa.net/detail/BIM-1003196
American Medical Association (AMA)
Vovk, Ruslan V.& Vovk, Nikolaj R.& Dobrovolskiy, Oleksandr V.. Aging Effect on Electrical Conductivity of Pure and Al-Doped YBa2Cu3O7−δ Single Crystals with a Given Topology of Planar Defects. Advances in Condensed Matter Physics. 2013. Vol. 2013, no. 2013, pp.1-7.
https://search.emarefa.net/detail/BIM-1003196
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1003196