Non-Ohmic Hall resistivity observed above the critical temperature in the high-temperature superconductor YBa₂Cu₃O_7-δ

Autor(en)

Ionut Puica, Wolfgang Lang, Khurram Siraj, Johannes D. Pedarnig, Dieter Bäuerle

Abstrakt

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 YBa₂Cu₃O_7−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.

Organisation(en)

Elektronische Materialeigenschaften

Externe Organisation(en)

Johannes Kepler Universität Linz

Journal

Physical Review B

Band

79

Anzahl der Seiten

6

ISSN

1098-0121

DOI

https://doi.org/10.1103/PhysRevB.79.094522

Publikationsdatum

2009

Peer-reviewed

Ja

ÖFOS 2012

1030 Physik, Astronomie, 103033 Supraleitung

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/5430c644-5909-431d-831a-37f4046398ce