EPR Effect in Magnetic Dependent Dissipation in High Temperature Superconductors

• Authors: J. Stankowski
• Languages of publication: EN

Abstracts

EN

Electron paramagnetic resonance in ac dissipation was observed due to the Cooper pairs breaking up to their quasiparticle state. This phenomenon is the result of a flux motion on a pinning centers in high temperature superconducting materials. The detection of ac dissipation was performed in a low ac field (15 and 22 MHz) as well as in microwave range. Vortex motion hysteresis loop with magnetic field modulation of 15 Hz was recorded. Besides V-shaped dependence of ac power dissipation P(B), a direct electron paramagnetic resonance signal related to Cooper pairs → quasiparticle fluctuation was observed.

Keywords

EN

74.72.-h; 76.30.-v

Discipline

• 74.72.-h: Cuprate superconductors
• 76.30.-v: Electron paramagnetic resonance and relaxation(see also 33.35.+r Electron resonance and relaxation in atomic and molecular physics; 87.80.Lg Magnetic and paramagnetic resonance in biological physics)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2005
• Volume: 108
• Issue: 2
• Pages: 243-246

Dates

published

2005-08

received

2005-04-24

Contributors

author

J. Stankowski

• Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland

References

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• 2. M. Golosowsky, M. Tsindlekht, D. Davidow, Supercond. Sci. Techn., 9, 1, 1996
• 3. J. Stankowski, J. Martinek, B.Czyzak, Phys. Rev. B48, 3383, 1993
• 4. E. Silva, R. Marcon, R. Fastampa, M. Giura, S. Sarti, G. Ghigo, J. Low Temp., 131, 871, 2003
• 5. J. Stankowski, L. Piekara-Sady, W. Kempiński, J. Phys. Chem., 65, 321, 2004

Identifiers

DOI

10.12693/APhysPolA.108.243