Peak effect in laser ablated DyBa{sub 2}Cu{sub 3}O
In this article we report the observation of a peak in the microwave surface resistance (at frequencies {similar_to}10 GHz) of laser ablated DyBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} films in magnetic field ranging from 2 to 9 kOe ({parallel}c) close to the superconducting transition temperature [T{sub c}(H)]. The exact nature of the peak is sample dependent but it follows a general behavior. The peak shifts to lower temperature when the magnetic field is increased. It has strong frequency dependence and the peak is pronounced at frequencies close to the depinning frequency of the flux line lattice. >From the observed temperature and field dependence we argue that this peak is associated with the order{endash}disorder transition of the flux line lattice close to T{sub c}(H). {copyright} 2001 American Institute of Physics.
- Sponsoring Organization:
- (US)
- OSTI ID:
- 40204097
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 11 Vol. 89; ISSN 0021-8979
- Publisher:
- The American Physical Society
- Country of Publication:
- United States
- Language:
- English
Similar Records
Thermally activated depinning in polycrystalline Bi-based high- T sub c superconductors
Anisotropy and Lorentz-force dependence of twin-boundary pinning and its effect on flux-lattice melting in single-crystal YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]]