Non-ohmic electrical transport properties above the critical temperature in optimally and underdoped superconducting YBa<sub>2</sub>Cu<sub>3</sub>O<sub>6+x</sub>
- Author(s)
- Wolfgang Lang, Ionut Puica, Georg Zechner, T. Kitzler, Marius Bodea, Khurram Siraj, Johannes D. Pedarnig
- Abstract
The resistivity and the Hall effect as a function of current density and temperature in the normal state of very thin films of YBa2Cu3O6+x are measured with a fast pulsed-current technique. The in-plane longitudinal and transverse (Hall) conductivities are reduced in intense current densities up to several . In optimally-doped samples, this non-ohmic effect is limited to temperatures below 100 K. In a moderately underdoped sample, however, the non-linearity extends to the temperature range from Tc =53 K to similar to 150 K. The non-linear part of the Hall conductivity does not scale with a critical exponent, thus excluding classical amplitude fluctuations of the superconducting order parameter as possible origin.
- Organisation(s)
- Electronic Properties of Materials
- External organisation(s)
- Johannes Kepler Universität Linz
- Journal
- Journal of Superconductivity and Novel Magnetism
- Volume
- 25
- Pages
- 1361-1364
- No. of pages
- 4
- ISSN
- 1557-1939
- DOI
- https://doi.org/10.1007/s10948-012-1660-8
- Publication date
- 2012
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103009 Solid state physics, 103015 Condensed matter, 103018 Materials physics
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/nonohmic-electrical-transport-properties-above-the-critical-temperature-in-optimally-and-underdoped-superconducting-yba2cu3o6x(6d8df025-96ef-49c6-a516-837a62e49138).html