Fluctuation conductivity of oxygen underdoped YBa2Cu 3O7-δ single crystals

R. V. Vovk; G. Ya Khadzhai; I. L. Goulatis; A. Chroneos

doi:10.1016/j.physb.2013.11.056

Fluctuation conductivity of oxygen underdoped YBa₂Cu ₃O_7-δ single crystals

R. V. Vovk, G. Ya Khadzhai, I. L. Goulatis, A. Chroneos

Research output: Contribution to journal › Article › peer-review

57 Citations (Scopus)

Abstract

The electrical resistance in the range of T_C-300 K in the layer planes of YBa₂Cu₃O_7-δ single crystals with a range of oxygen deficiency (providing a range of T_C from 78 to 92 K) was investigated. The experimental data is approximated by an expression that accounts for the scattering of electrons on phonons, as well as on defects and the fluctuation conductivity in a 3-D model of the Aslamazov-Larkin theory. According to this approximation, depending upon the oxygen deficiency, the Debye temperature varies from 245 to 400 K, coherence length ξ_C(0) ≈0.5 Å.

Original language	English
Pages (from-to)	88-90
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	436
Early online date	3 Dec 2013
DOIs	https://doi.org/10.1016/j.physb.2013.11.056
Publication status	Published - 1 Mar 2014
Externally published	Yes

Keywords

Fluctuation conductivity
High temperature superconductor
Oxygen stoichiometry

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1016/j.physb.2013.11.056

Cite this

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title = "Fluctuation conductivity of oxygen underdoped YBa2Cu 3O7-δ single crystals",

abstract = "The electrical resistance in the range of TC-300 K in the layer planes of YBa2Cu3O7-δ single crystals with a range of oxygen deficiency (providing a range of TC from 78 to 92 K) was investigated. The experimental data is approximated by an expression that accounts for the scattering of electrons on phonons, as well as on defects and the fluctuation conductivity in a 3-D model of the Aslamazov-Larkin theory. According to this approximation, depending upon the oxygen deficiency, the Debye temperature varies from 245 to 400 K, coherence length ξC(0) ≈0.5 {\AA}.",

keywords = "Fluctuation conductivity, High temperature superconductor, Oxygen stoichiometry",

author = "Vovk, {R. V.} and Khadzhai, {G. Ya} and Goulatis, {I. L.} and A. Chroneos",

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journal = "Physica B: Condensed Matter",

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T1 - Fluctuation conductivity of oxygen underdoped YBa2Cu 3O7-δ single crystals

AU - Vovk, R. V.

AU - Khadzhai, G. Ya

AU - Goulatis, I. L.

AU - Chroneos, A.

PY - 2014/3/1

Y1 - 2014/3/1

N2 - The electrical resistance in the range of TC-300 K in the layer planes of YBa2Cu3O7-δ single crystals with a range of oxygen deficiency (providing a range of TC from 78 to 92 K) was investigated. The experimental data is approximated by an expression that accounts for the scattering of electrons on phonons, as well as on defects and the fluctuation conductivity in a 3-D model of the Aslamazov-Larkin theory. According to this approximation, depending upon the oxygen deficiency, the Debye temperature varies from 245 to 400 K, coherence length ξC(0) ≈0.5 Å.

AB - The electrical resistance in the range of TC-300 K in the layer planes of YBa2Cu3O7-δ single crystals with a range of oxygen deficiency (providing a range of TC from 78 to 92 K) was investigated. The experimental data is approximated by an expression that accounts for the scattering of electrons on phonons, as well as on defects and the fluctuation conductivity in a 3-D model of the Aslamazov-Larkin theory. According to this approximation, depending upon the oxygen deficiency, the Debye temperature varies from 245 to 400 K, coherence length ξC(0) ≈0.5 Å.

KW - Fluctuation conductivity

KW - High temperature superconductor

KW - Oxygen stoichiometry

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