ELECTRODYNAMICS OF THE ORGANIC SUPERCONDUCTORS KAPPA-(BEDT-TTF)(2)CU(NCS)(2) AND KAPPA-(BEDT-TTF)(2)CU[N(CN)(2)]BR
ELECTRODYNAMICS OF THE ORGANIC SUPERCONDUCTORS KAPPA-(BEDT-TTF)(2)CU(NCS)(2) AND KAPPA-(BEDT-TTF)(2)CU[N(CN)(2)]BR
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DOI：
10.1103/physrevb.50.13603
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发表时间：
1994-11-01
影响因子：
3.7
通讯作者：
WILLIAMS, JM
中科院分区：
文献类型：
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作者：
DRESSEL, M;KLEIN, O;WILLIAMS, JM
我们在毫米波频率范围内（1-3 cm-1）测量了标题化合物正常态和超导态的表面阻抗，并评估了不同晶体取向的复电导率。在转变温度以上，材料表现得像金属，散射率约为20 cm− 1。在超导状态下的电动力学是在良好的协议与计算的基础上BCS基态：而渗透深度和相干长度是各向异性的，超导能隙没有显示线节点的迹象。
We have performed measurements of the surface impedance in the normal and superconducting states of the title compounds in the millimeter wave-frequency range (1–3 cm− 1), and have evaluated the complex conductivity for different crystallographic orientations. Above the transition temperature, the materials behave like metals with a scattering rate of approximately 20 cm− 1. In the superconducting state the electrodynamics is in good agreement with calculations based on a BCS ground state: while the penetration depth and the coherence length are anisotropic, the superconducting energy gap shows no indications of line nodes.