Sensitivity of surface resistance measurement of HTS thin films by cavity resonator, dielectric resonator and microstrip line resonator

Pramana

R Pinto³  N D Kataria1¹  Mukul Misra² 

[1] Superconductivity Division, National Physical Laboratory, New Delhi 110 012, India$$;Research Center for Superconductor Photonics, Osaka University, Osaka 565 0871, Japan$$;Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400 005, India$$

关键词: Microwave surface resistance;    high-temperature superconductors.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

Microwave surface resistance 𝑅s of silver-doped YBa2Cu3O7-𝛿 (YBCO) thin film, deposited by laser ablation technique on 10 mm × 10 mm LaAlO3 substrate, has been measured by resonant techniques in the frequency range from 5 GHz to 20 GHz. The geometrical factor of the sample and the resonator has been determined theoretically by the knowledge of the electromagnetic field distribution in the resonators. The microwave surface resistance of the superconducting sample is then extracted from the measured 𝑄 value as a function of temperature. The sensitivity of the 𝑅s measurement, that is, the relative change in the 𝑄 value with the change in the 𝑅s value is determined for each resonator.

【 授权许可】

Unknown