Correlation between microwave surface resistance and density of YBCO ceramic superconductor

Gupta, Anurag; Swarup, R.; Bansal, Mona

doi:10.1016/0921-4534(94)92224-1

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2011

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“…The choice of YBCO ceramics was motivated by its attractive properties: (i) using the ceramics a better heat transfer may be obtained because the heat-resistance effect of the base-superconducting layer junction is avoided; (ii) ceramics is much more resistant to the mechanical pressure of a probe, which due to the dependence of surface resistance on the material density [6] allows one to assume that the surface resistance of ceramics could be changed by the probe pressure and thus the detector's resistance could be diminished. All of this permitted us to anticipate that the characteristics of such detectors could be made close to the characteristics of the best semiconductor detectors.…”

Section: Measurement Methodsmentioning

confidence: 99%

Microwave detection at metal–high-T_csuperconducting ceramics point contact

Repšas¹,

Laurinavičius²,

Vaškevičius³

et al. 2011

Lithuanian J. Phys.

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Experimental results of observed microwave detection at a point contact of metal-high-temperature superconducting YBa2Cu3O7−x (YBCO) ceramics at room and liquid nitrogen temperatures are presented. The use of ceramics instead of a thin film allowed for a better heat removal from the point contact and reduction of output resistance down to 50 ohms. It is demonstrated that the observed detection is non-bolometric. The possibility to use YBCO ceramics-based detectors with properties comparable to those of semiconducting analogues is discussed.

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Section: Measurement Methodsmentioning

confidence: 99%