低温物理学报
低溫物理學報
저온물이학보
CHINESE JOURNAL OF LOW TEMPERATURE PHYSICS
2008年
4期
357-359
,共3页
超导体%电阻转变%穿透深度%表面电阻
超導體%電阻轉變%穿透深度%錶麵電阻
초도체%전조전변%천투심도%표면전조
superconductors%resistive transition%penetration depth%surface resistance
利用标准的四引线方法研究了磁场平行和垂直于YBCO/MgO超导薄膜表面时的电阻转变.另外,本文采用微带谐振技术研究了该超导薄膜的微波性质.我们获得了该超导薄膜在绝对零度时的穿透深度λ0=280 nm,并且计算出了该超导薄膜的表面电阻,结果显示在60 K,7.78 GHz时Rs=78.2μΩ;在76 K,7.77 GHz时Rs=179.8 μΩ.
利用標準的四引線方法研究瞭磁場平行和垂直于YBCO/MgO超導薄膜錶麵時的電阻轉變.另外,本文採用微帶諧振技術研究瞭該超導薄膜的微波性質.我們穫得瞭該超導薄膜在絕對零度時的穿透深度λ0=280 nm,併且計算齣瞭該超導薄膜的錶麵電阻,結果顯示在60 K,7.78 GHz時Rs=78.2μΩ;在76 K,7.77 GHz時Rs=179.8 μΩ.
이용표준적사인선방법연구료자장평행화수직우YBCO/MgO초도박막표면시적전조전변.령외,본문채용미대해진기술연구료해초도박막적미파성질.아문획득료해초도박막재절대령도시적천투심도λ0=280 nm,병차계산출료해초도박막적표면전조,결과현시재60 K,7.78 GHz시Rs=78.2μΩ;재76 K,7.77 GHz시Rs=179.8 μΩ.
Resistive transition of the YBCO/MgO is investigated in magnetic field applied parallel and perpendicular to the ab plane of the films by a standard four-probe method. In addition, the penetration depth of OK of YBC0 λ0 =nm can be obtained by microstrip resonator technique. Surface resistance of the films can also be calculated, R, =78.2 μΩ at 60 K, 7.78 GHz and Rs = 179.8 μΩ at 76 K, 7.77 GHz.
