| Issue |
Europhys. Lett.
Volume 64, Number 3, November 2003
|
|
|---|---|---|
| Page(s) | 399 - 405 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2003-00105-4 | |
| Published online | 01 November 2003 | |
Scattering approach to the magnetic susceptibility of high-temperature superconductors
1
Institute of Physics, ASCR - Na Slovance 2, 182 21 Prague 8, Czech Republic
2
Faculty of Mathematics and Physics, Charles University V Holešovičkách 2, 180 00 Prague 8, Czech Republic
Received:
7
May
2003
Accepted:
18
August
2003
We study the dc and ac magnetic susceptibility of
high-temperature superconductors in weak magnetic fields. The
high-resolution magnetic measurements were done using the
non-commercial SQUID magnetometer with the sample in a properly
quiet electromagnetic surrounding. The sample is in a residual
external ac field smaller than 1
and the typical applied ac
field is about 1
. We show that the interpretation of the
temperature dependence of the susceptibility measured under these
conditions cannot be based on temperature-dependent suprefluid
density, but can be interpreted as due to temperature-dependent
electron scattering.
PACS: 74.25.Ha – Properties of type I and type II superconductors: Magnetic properties / 74.25.Fy – Transport properties (electric and thermal conductivity, thermoelectric effects, etc.)
© EDP Sciences, 2003
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