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- Title
c-Axis Penetration Depth in Bi[sub 2]Sr[sub 2]CaCu[sub 2]O[sub 8 + δ] Single Crystals Measured by ac-Susceptibility and Cavity Perturbation Technique.
- Authors
Shovkun, D. V.; Trunin, M. R.; Zhukov, A. A.; Nefyodov, Yu. A.; Bontemps, N.; Enrıquez, H.; Buzdin, A.; Daumens, M.; Tamegai, T.
- Abstract
The c-axis penetration depth Δλ[sub c] in Bi[sub 2]Sr[sub 2]CaCu[sub 2]O[sub 8 + δ] (BSCCO) single crystals as a function of temperature has been determined using two techniques, namely, measurements of the ac-susceptibility at a frequency of 100 kHz and the surface impedance at 9.4 GHz. Both techniques yield an almost linear function Δλ[sub c](T)∝T in the temperature range T < 0.5T[sub c]. Electrodynamic analysis of the impedance anisotropy has allowed us to estimate λ[sub c](0)approx. 50μm in BSCCO crystals overdoped with oxygen (T[sub c]approx. 84 K) and λ[sub c](0)approx. 150μm at the optimal doping level (T[sub c]approx. 90 K). © 2000 MAIK “Nauka / Interperiodica”.
- Subjects
MAGNETIC crystals; ELECTROMAGNETIC fields; ANISOTROPY
- Publication
JETP Letters, 2000, Vol 71, Issue 2, p92
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/1.568288