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Title: Controlling superconductivity in La2-xSrxCuO4+δ by ozone and vacuum annealing

Abstract

In this study we performed a series of ozone and vacuum annealing experiments on epitaxial La2-xSrxCuO4+δ thin films. The transition temperature after each annealing step has been measured by the mutual inductance technique. The relationship between the effective doping and the vacuum annealing time has been studied. Short-time ozone annealing at 470 °C oxidizes an underdoped film all the way to the overdoped regime. The subsequent vacuum annealing at 350 °C to 380 °C slowly brings the sample across the optimal doping point back to the undoped, non-superconducting state. Several ozone and vacuum annealing cycles have been done on the same sample and the effects were found to be repeatable and reversible Vacuum annealing of ozone-loaded LSCO films is a very controllable process, allowing one to tune the doping level of LSCO in small steps across the superconducting dome, which can be used for fundamental physics studies.

Authors:
 [1];  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1193195
Report Number(s):
BNL-107858-2015-JA
Journal ID: ISSN 1557-1939; R&D Project: MA509MACA; KC0203020
Grant/Contract Number:  
SC00112704
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Superconductivity and Novel Magnetism
Additional Journal Information:
Journal Volume: 28; Journal Issue: 1; Journal ID: ISSN 1557-1939
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; La2-xSrxCuO4+δ thin films; molecular beam epitaxy; ozone and vacuum annealing

Citation Formats

Leng, Xiang, and Bozovic, Ivan. Controlling superconductivity in La2-xSrxCuO4+δ by ozone and vacuum annealing. United States: N. p., 2014. Web. doi:10.1007/s10948-014-2888-2.
Leng, Xiang, & Bozovic, Ivan. Controlling superconductivity in La2-xSrxCuO4+δ by ozone and vacuum annealing. United States. https://doi.org/10.1007/s10948-014-2888-2
Leng, Xiang, and Bozovic, Ivan. 2014. "Controlling superconductivity in La2-xSrxCuO4+δ by ozone and vacuum annealing". United States. https://doi.org/10.1007/s10948-014-2888-2. https://www.osti.gov/servlets/purl/1193195.
@article{osti_1193195,
title = {Controlling superconductivity in La2-xSrxCuO4+δ by ozone and vacuum annealing},
author = {Leng, Xiang and Bozovic, Ivan},
abstractNote = {In this study we performed a series of ozone and vacuum annealing experiments on epitaxial La2-xSrxCuO4+δ thin films. The transition temperature after each annealing step has been measured by the mutual inductance technique. The relationship between the effective doping and the vacuum annealing time has been studied. Short-time ozone annealing at 470 °C oxidizes an underdoped film all the way to the overdoped regime. The subsequent vacuum annealing at 350 °C to 380 °C slowly brings the sample across the optimal doping point back to the undoped, non-superconducting state. Several ozone and vacuum annealing cycles have been done on the same sample and the effects were found to be repeatable and reversible Vacuum annealing of ozone-loaded LSCO films is a very controllable process, allowing one to tune the doping level of LSCO in small steps across the superconducting dome, which can be used for fundamental physics studies.},
doi = {10.1007/s10948-014-2888-2},
url = {https://www.osti.gov/biblio/1193195}, journal = {Journal of Superconductivity and Novel Magnetism},
issn = {1557-1939},
number = 1,
volume = 28,
place = {United States},
year = {Fri Nov 21 00:00:00 EST 2014},
month = {Fri Nov 21 00:00:00 EST 2014}
}

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Cited by: 6 works
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Works referenced in this record:

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Works referencing / citing this record:

Design of Complex Oxide Interfaces by Oxide Molecular Beam Epitaxy
journal, October 2019