角磁阻振荡揭示的有机分子导体的多维性质
Multidimensional Nature of Molecular Organic Conductors Revealed by Angular Magnetoresistance Oscillations
摘要：
有机导体的角度相关的磁阻实验表现出广泛的角度振荡与尺寸和对称性的晶体结构和电子能量色散。特别地，当样品在磁场中旋转通过不同的晶面时，与1、2和3维电子运动相关联的特性被分别揭示。最初在基于TMTSF的导体中发现，这些效应在相关系统（DMET）2I3中特别明显。在这里，实验和计算结果的磁阻振荡在这种材料中，在广泛的磁场取向，提出了这样一种方式，以独特地突出这种多维behavior.The计算采用玻尔兹曼输运方程，其中包括系统的三斜晶体结构，它允许沿晶轴的转移积分的准确估计，验证了1d，（DMET）2I3的2d和3d性质，以及电子行为中维度之间的交叉。
英文摘要：
Angle dependent magnetoresistance experiments on organic conductors exhibit a wide range of angular oscillations associated with the dimensionality and symmetry of the crystal structure and electron energy dispersion. In particular, characteristics associated with 1, 2, and 3 dimensional electronic motion are separately revealed when a sample is rotated through different crystal planes in a magnetic field. Originally discovered in the TMTSF based conductors, these effects are particularly pronounced in the related system (DMET)2I3. Here, experimental and computational results for magnetoresistance oscillations in this material, over a wide range of magnetic field orientations, are presented in such a manner as to uniquely highlight this multidimensional behavior.The calculations employ the Boltzmann transport equation that incorporates the systems triclinic crystal structure, which allows for accurate estimates of the transfer integrals along the crystallographic axes, verifying the 1d, 2d and 3d nature of (DMET)2I3, as well as crossovers between dimensions in the electronic behavior.
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