Quantum criticality in organic conductors? Fermi liquid versus non-Fermi-liquid behaviour
Quantum criticality in organic conductors? Fermi liquid versus non-Fermi-liquid behaviour
复制标题
DOI：
10.1088/0953-8984/23/29/293201
复制
发表时间：
2011-07
期刊：
影响因子：
--
通讯作者：
M. Dressel
中科院分区：
文献类型：
--
作者：
M. Dressel
有机金属在其电荷和自旋自由度方面表现出不寻常的电子特性，这让物理学家困惑了几十年。到目前为止，这种行为被确定为内在的，并与电子相互作用有关。像其他相关电子系统，如重费米子或过渡金属氧化物一样，有机导体位于自旋或电荷扇区中的有序相旁边。理论预测量子涨落在低温下变得重要，量子临界行为存在于大多数物理性质中。在这里，我们调查的实验证据的量子临界性在良好的有机模型化合物，并寻找非费米液体行为的迹象。
Organic metals exhibit unusual electronic properties in their charge and spin degrees of freedom that have puzzled physicists for decades. By now this behaviour is established as intrinsic and related to electronic interactions. Like other correlated electron systems, such as heavy fermions or transition-metal oxides, organic conductors are located next to some ordered phase in the spin or charge sectors. Theory predicts quantum fluctuations to become important at low temperatures and quantum critical behaviour present in most physical properties. Here we survey the experimental evidence of quantum criticality in well-established organic model compounds and look for indications of non-Fermi-liquid behaviour.