Title: High field magnetoresistivity of epitaxial La2-xSrxCuO4 thin films
Authors: Vanacken, Johan ×
Weckhuysen, L
Wambecq, Tom
Wagner, Patrick Hermann
Moshchalkov, Victor #
Issue Date: Nov-2005
Publisher: Elsevier science bv
Series Title: Physica c-superconductivity and its applications vol:432 issue:1-2 pages:81-98
Abstract: A large positive magnetoresistivity (up to tens of percents) is observed in both underdoped and overdoped superconducting La2-xSrxCuO4 epitaxial thin films at temperatures far above the superconducting critical temperature T-c. For the underdoped samples, this magnetoresistance cannot be described by the Kohler rule and we believe it is to be attributed to the influence of superconducting fluctuations. In the underdoped samples (0.05 <= x <= 0.15), the large magnetoresistance is only present when at low temperatures superconductivity occurs. The strong magnetoresistivity, which persists even at temperatures substantially above T-c, can be related to the pairs forming eventually the superconducting state below T-c. Our observations support the idea of a close relation between the pseudogap and the superconducting gap and provide new indications for the presence of pairs above T-c. (c) 2005 Elsevier B.V. All rights reserved.
ISSN: 0921-4534
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
Soft Matter and Biophysics
× corresponding author
# (joint) last author

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