| Issue |
Europhys. Lett.
Volume 53, Number 6, March 2001
|
|
|---|---|---|
| Page(s) | 783 - 789 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2001-00220-2 | |
| Published online | 01 December 2003 | |
Microwave-induced instability observed in 
in a static magnetic field
1
Laboratoire de
Physique de la Matière Condensée, Ecole Normale
Supérieure
24 rue Lhomond, 75231 Paris Cedex 05, France
2
Department of Applied Physics, The University of Tokyo
Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
Received:
4
December
2000
Accepted:
5
January
2001
We have measured the microwave dissipation at 10 GHz through the
imaginary part of the susceptibility, 
, in a
Bi2Sr2CaCu2O8 single crystal in an external static
magnetic field H parallel to the c-axis at various fixed
temperatures. The characteristics of 
exhibit a sharp
step at a field Hstep, strongly dependent on the amplitude
of the microwave excitation hac. The characteristics of
hac
vs.
Hstep, reveal the behavior expected for the
magnetic-field dependence of Josephson coupling.
PACS: 74.25.Nf – Response to electromagnetic fields (nuclear magnetic resonance, surface impedance, etc.) / 74.72.Hs – Bi-based cuprates / 74.50.+r – Proximity effects, weak links, tunneling phenomena and Josephson effects
© EDP Sciences, 2001
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