INFLUENCE OF LONGITUDINAL MAGNETIC FIELD ON THE FLUCTUATION CONDUCTIVITY IN SLIGHTLY Al-DOPED YBa2Cu3-zAlzO7-δ SINGLE CRYSTALS WITH A GIVEN TOPOLOGY OF PLANE DEFECTS-Reference-Cited by-同舟云学术

INFLUENCE OF LONGITUDINAL MAGNETIC FIELD ON THE FLUCTUATION CONDUCTIVITY IN SLIGHTLY Al-DOPED YBa2Cu3-zAlzO7-δ SINGLE CRYSTALS WITH A GIVEN TOPOLOGY OF PLANE DEFECTS

Published:2011-10-30 Issue:27 Volume:25 Page:2131-2136
ISSN:0217-9849
Container-title:Modern Physics Letters B
language:en
Short-container-title:Mod. Phys. Lett. B

Author:

VOVK R. V.¹,OBOLENSKII M. A.¹,ZAVGORODNIY A. A.¹,NAZYROV Z. F.¹,GOULATIS I. L.¹,KRUGLYAK V. V.²,CHRONEOS A.³

Affiliation:

1. Kharkov National University, 4 Svoboda Sq., 61077 Kharkov, Ukraine

2. University of Exeter, Stocker Road, Exeter, EX4 4QL, UK

3. Department of Materials, Imperial College, London SW7 2AZ, UK

Abstract

In this work we study the influence of the constant magnetic field up to 14 kOe to the temperature dependence of the electrical conductivity in the ab-plane of aluminium doped YBa 2 Cu 3 O 7-δ single crystals with an unidirectional twin boundaries system. The temperature dependence of the excess para-conductivity is interpreted within the Aslamazov–Larkin theoretical model of the fluctuation conductivity. It was shown that the lack of fan-shaped expansion of the resistive transitions in the magnetic field in these samples may be due to the lack of the non-pinning vortex liquid phase.

Publisher

World Scientific Pub Co Pte Lt

Subject

Condensed Matter Physics,Statistical and Nonlinear Physics

Link

https://www.worldscientific.com/doi/pdf/10.1142/S0217984911027327

Reference17 articles.

1. Excess conductivity and pseudo-gap state in YBCO single crystals slightly doped with Al and Pr

2. Effect of high pressure on the fluctuation conductivity and the charge transfer of YBa2Cu3O7−δ single crystals

3. Observation of vortices and hidden pseudogap from scanning tunneling spectroscopic studies of the electron-doped cuprate superconductor Sr 0.9 La 0.1 CuO 2

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