Impact of Strain on the Superconducting Properties of Strongly Underdoped La_{2-x}Sr_xCuO_4 Thin Films

• Authors: I. Zaytseva , M. Cieplak , W. Paszkowicz , A. Abal'oshev , M. Berkowski
• Languages of publication: EN

Abstracts

EN

Using pulsed laser deposition we have grown films of La_{2-x}Sr_xCuO_4 with x in close vicinity of the superconductor-insulator transition, x=0.051 and x=0.048, on SrLaAlO_4 substrates, and of different thickness d (from 25 nm to 250 nm). The X-ray diffraction shows that for each d the films grow with variable degree of compressive in-plane strain, with the largest strain achieved in thinnest films. The resistivity measurements show strong enhancement of superconductivity with increasing strain, so that the onset of superconductivity at temperature as high as 27 K is observed. With increasing strain the character of resistivity changes from the insulating to metallic.

Keywords

EN

74.25.F-; 74.62.En; 74.78.-w

Discipline

• 74.78.-w: Superconducting films and low-dimensional structures
• 74.62.En: Effects of disorder
• 74.25.F-: Transport properties

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 121
• Issue: 4
• Pages: 858-865

Dates

published

2012-04

Contributors

author

I. Zaytseva

• Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland

author

M. Cieplak

• Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland

author

W. Paszkowicz

• Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland

author

A. Abal'oshev

• Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland

author

M. Berkowski

• Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland

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Identifiers

DOI

10.12693/APhysPolA.121.858