ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
We used microwave self-resonant and magnetically modulated microwave absorption techniques to measure the London penetration depth, λ, and coherence length, ξ, in the direction parallel and perpendicular to the a–b plane of YBCO films. We found that both λ and ξ were anisotropic; it appeared that the value of λ(parallel)(0) was about 1800 A(ring) and λ⊥(86.5) about 26 000 A(ring), where λ(parallel) is the penetration depth for the applied microwave electric field parallel and λ⊥ perpendicular to the film plane (c-axis is perpendicular to the film plane). We deduced ξ(parallel) to be equal to 129 A(ring) and ξ⊥ 40 A(ring) at 86.5 K. The anisotropy factor γ we determined to be about 3.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.353554