Issue |
Europhys. Lett.
Volume 51, Number 3, August I 2000
|
|
---|---|---|
Page(s) | 334 - 340 | |
Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
DOI | https://doi.org/10.1209/epl/i2000-00357-4 | |
Published online | 01 September 2002 |
c-axis negative magnetoresistance and upper critical field
of
1
H. H. Wills Physics Laboratory, University of Bristol - Bristol BS8 1TL,
UK
2
Kapitza Institute for Physical Problems - 2 Kosygina
Str., 117334 Moscow, Russia
3
Department of Physics, Loughborough University - Loughborough LE11
3TU, UK
Received:
20
March
2000
Accepted:
25
May
2000
The out-of-plane
resistance and the resistive upper critical field of BSCCO-2212 single crystals with
–93 K have
been measured in magnetic fields
up to 50 T over a wide temperature range. The results are
characterised by a positive linear magnetoresistance in the
superconducting state and a negative linear magnetoresistance in the
normal state. The zero-field
normal-state c-axis resistance, the negative linear normal-state magnetoresistance, and the
divergent upper critical field
are explained
in the framework of the bipolaron theory
of superconductivity.
PACS: 74.20.-z – Theories and models of superconducting state
© EDP Sciences, 2000
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