High-precision measurement of magnetic penetration depth in superconducting films
نویسندگان
چکیده
منابع مشابه
Penetration depth measurement in high quality YBa2Cu3O7−x thin films
The parallel plate resonator method has been used for measuring high quality YBa2Cu3O7−x (YBCO) thin films, which have low temperature residual losses comparable to those previously obtained in single crystals. The surface resistance and the real part of the conductivity show a non-monotonic behaviour with a broad peak around 45 K. The penetration depth and the real part of the conductivity var...
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Polarized neutron reflectometry was used for the direct measurement of the magnetic-field penetration depth in a high-temperature (HT,) superconducting film. Two scattering geometries were used. The deduced neutron scattering length density profile gave an exact picture of the composition of the film. The fit to the spin-asymmetry yielded a magnetic-penetration depth of 1400 2 100 A at a temper...
متن کاملMagnetic penetration depth measurements of superconducting thin films by a microstrip resonator technique
The microstrip resonator technique is a convenient way to sensitively measure the temperature dependence of the magnetic penetration depth, n(T), in superconducting thin films. Because the method relies on measuring the resonant frequency of a microwave transmission line resonator, one can very precisely measure small changes in A( T). This technique can resolve changes in ,4 on the order of se...
متن کاملPenetration depth of a superconducting superlattice.
We have measured the magnetic-flux expulsion of a superconducting superlattice and related it to the Meissner penetration depth. The temperature dependence of the penetration depth is in quantitative agreement with theoretical expectation based on mean-field theory. The zerotemperature penetration depth is found in excellent, quantitative agreement without adjustable parameters with theoretical...
متن کاملKinetic inductance and penetration depth of thin superconducting films measured by THz-pulse spectroscopy.
We measure the transmission of THz pulses through thin films of YBa2Cu3O7−δ at temperatures between 10 K and 300 K. The pulses possess a usable bandwidth extending from ∼0.1 – 1.5 THz (3.3 cm – 50 cm). Below Tc we observe pulse reshaping caused by the kinetic inductance of the superconducting charge carriers. From transmission data, we extract values of the London penetration depth, as a functi...
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ژورنال
عنوان ژورنال: Review of Scientific Instruments
سال: 2016
ISSN: 0034-6748,1089-7623
DOI: 10.1063/1.4967004