Abstract
Vortices in organic superconductor κ-(BEDT-TTF)2X {X = Cu(NCS)2, Cu[N(CN)2]Br} are interesting for their anisotropic character. To investigate their dynamical behavior, ac complex susceptibility and dc electrical resistance measurements were done in the presence of vortices introduced by dc magnetic fields. In the course of experiments, we found that the dc field dependence of complex susceptibility changes drastically for moderate ac magnetic fields, i.e. the shielding effect of the system (-χ′) has a peak structure and the dissipation term (χ″) shows a dip. In addition to the anomalies in the susceptibility, it turned out that the electrical resistance has a dip structure under the same dc magnetic fields. These anomalies imply that the vortices are less mobile there.
Original language | English |
---|---|
Pages (from-to) | 607-608 |
Number of pages | 2 |
Journal | Physica C: Superconductivity and its applications |
Volume | 388-389 |
DOIs | |
Publication status | Published - May 2003 |
Externally published | Yes |
Event | proceedings of the 23rd international conference on low temper - Hiroshima, Japan Duration: Aug 20 2002 → Aug 27 2002 |
Keywords
- Complex susceptibility
- Flow resistance
- Organic superconductor
- Vortex dynamics
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering