Non-Ohmic Hall resistivity observed above the critical temperature in the high-temperature superconductor YBa2Cu3O7-δ

Ionut Puica (Corresponding author), Wolfgang Lang (Corresponding author), Khurram Siraj, Johannes D. Pedarnig, Dieter Bäuerle

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Abstract

Investigations of the resistivity and the Hall effect as a function of electric field and temperature in the normal state and upper part of the superconducting transition of an optimally doped very thin film of YBa2Cu3O7−δ are reported. Using a fast pulsed-current technique allowed to reduce the self-heating of the sample and to reach electric fields up to 1 kV/cm. An intrinsic non-Ohmic behavior of the Hall conductivity above the critical temperature that appears to originate from two different partially counteracting effects is revealed. The major contribution stems from the suppression of Aslamazov-Larkin superconducting fluctuations in high electric fields.
Original languageEnglish
Article number094522
Number of pages6
JournalPhysical Review B
Volume79
Issue number9
DOIs
Publication statusPublished - 2009

Austrian Fields of Science 2012

  • 1030 Physics, Astronomy
  • 103033 Superconductivity

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