Fluctuation spectroscopy: a new approach for studying low-dimensional molecular metals.
Fluctuation spectroscopy: a new approach for studying low-dimensional molecular metals.
复制标题
涨落光谱：研究低维分子金属的新方法。
作者：
J. Müller
波动（或噪声）通常仅仅被认为是一种干扰，一种限制科学测量准确性的不必要的干扰。然而，电子波动揭示了平均量（电阻）本身不存在的隐藏信息。在这里，我们将电阻噪声谱描述为一种强大的新工具，用于研究低维有机导体中电子过程的低频动力学。多年来，这些分子电荷转移复合物为探索低维材料的物理学提供了前所未有的模型系统。低维与分子导体特有的其他参数的结合，为库仑相关效应变得相关奠定了基础，在某些情况下，甚至主导了 π 电子系统的特性。强电子-电子和电子-声子相互作用的综合效应产生了这些材料中遇到的丰富的基态现象。为了提供示例，我们将噪声光谱描述为一种研究相关电荷载流子与晶格振动分子内模式的耦合以及研究反铁磁（莫特）绝缘相和超导相的不均匀共存区域的方法。
Fluctuations (or noise) are often merely considered a nuisance, an unwanted disturbance limiting the accuracy of a scientific measurement. Electronic fluctuations, however, reveal hidden pieces of information not present in the mean quantity (the resistance) itself. Herein we describe resistance noise spectroscopy as a powerful new tool for investigating the low-frequency dynamics of electronic processes in low-dimensional organic conductors. Over the years, these molecular charge-transfer complexes have provided unprecedented model systems for exploring the physics of low-dimensional materials. The combination of low dimensionality with other parameters, specific to molecular conductors, sets the stage for Coulomb correlation effects to become relevant and, under certain circumstances, even to dominate the properties of the π-electron system. The combined effects of strong electron-electron and electron-phonon interactions give rise to the rich phenomenology of ground states encountered in these materials. To provide examples, we describe noise spectroscopy as a method to study the coupling of the correlated charge carriers to intramolecular modes of lattice vibrations and to investigate the inhomogeneous coexistence region of antiferromagnetic (Mott) insulating and superconducting phases.
影响因子：
5.4
作者：
Gilden, DL
通讯作者：
Gilden, DL