Thermal activation between Landau levels in the organic superconductor beta(")-(BEDT-TTF)2SF5CH2CF2SO3.
Thermal activation between Landau levels in the organic superconductor beta(")-(BEDT-TTF)2SF5CH2CF2SO3.
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有机超导体 beta(")-(BEDT-TTF)2SF5CH2CF2SO3 中朗道能级之间的热活化。
DOI：
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发表时间：
2001
影响因子：
8.6
通讯作者：
G. L. Gard
中科院分区：
文献类型：
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作者：
M.;A. Ardavan;J. Symington;J. Singleton;Neil Harrison;Charles H. Mielke;J. Schlueter;R. Winter;G. L. Gard
我们发现有机超导体β（“）-(BEDT-TTF)2SF5CH2CF2SO3的层间电阻率的舒布尼可夫-德哈斯振荡在大约60 t的磁场中变得非常明显，电导率极小值表现出热激活行为，可以简单地用朗道间隙的存在来解释，准一维费米表面片对电导率的贡献可以忽略不计。这一观察结果，以及化学势振荡的完全抑制，与准一维薄片的不相称的嵌套不稳定性是一致的。
We show that Shubnikov-de Haas oscillations in the interlayer resistivity of the organic superconductor beta(")-(BEDT-TTF)2SF5CH2CF2SO3 become very pronounced in magnetic fields approximately 60 T. The conductivity minima exhibit thermally activated behavior that can be explained simply by the presence of a Landau gap, with the quasi-one-dimensional Fermi surface sheets contributing negligibly to the conductivity. This observation, together with complete suppression of chemical potential oscillations, is consistent with an incommensurate nesting instability of the quasi-one-dimensional sheets.