UCL Discovery

## Intrinsic c-axis transport in 2212-BSCCO

Thomas, PJ; Fenton, JC; Yang, G; Gough, CE; (2000) Intrinsic c-axis transport in 2212-BSCCO. Physica C: Superconductivity , 341-34 (3) 1547 - 1550. 10.1016/S0921-4534(00)01330-7.

## Abstract

We describe two experimental approaches to circumvent the problem of self-heating in IV measurements on small mesa samples of 2212-BSCCO. Simultaneous dc and temperature measurements have been performed, allowing corrections for heating to be made. Short pulse measurements have also been made, where the IV characteristics and the mesa temperature can be measured on a $\mu$s time-scale enabling intrinsic IV characteristics to be derived, even in the presence of appreciable self-heating. Self-heating leads to an appreciable depression of the apparent energy gap and also accounts, in major part, for the s-shaped characteristics often reported at high currents. By correcting for the temperature rise, we derive the intrinsic temperature dependence of the tunnelling characteristics for crystals with a range of doping. Results are compared with recent theoretical models for c-axis transport in d-wave superconductors.

Type: Article Intrinsic c-axis transport in 2212-BSCCO An open access version is available from UCL Discovery 10.1016/S0921-4534(00)01330-7 http://dx.doi.org/ 10.1016/S0921-4534(00)01330-7 English This is the author’s version of a work that was accepted for publication in Physica C: Superconductivity. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Physica C: Superconductivity, [VOL 341-348, PART 3, (2000)] DOI 10.1016/S0921-4534(00)01330-7 UCL > Provost and Vice Provost OfficesUCL > Provost and Vice Provost Offices > UCL BEAMSUCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical SciencesUCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology https://discovery.ucl.ac.uk/id/eprint/51529