Heavy fermion materials and physics
Heavy fermion materials and physics
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重费米子材料和物理
DOI：
10.7498/aps.68.20190801
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发表时间：
2019
影响因子：
1
通讯作者：
Yuan Hui Qiu
中科院分区：
文献类型：
--
作者：
Xie Wu;Shen Bin;Zhang Yong Jun;Guo Chun Yu;Xu Jia Cheng;Lu Xin;Yuan Hui Qiu
作为强相关电子系统的典型例子，重费米子材料表现出反铁磁序、铁磁序、非费米液相、非常规超导、量子自旋液体、轨道序和拓扑序等多种量子基态。与其他强相关电子系统相比，重费米子系统具有相对较小的特征能级，这使得可以通过使用压力、磁场和化学掺杂等外部参数来连续调节不同的量子态。因此，重费米子材料是研究量子相变、超导性及其相互作用的理想系统。在这篇综述中，我们简要介绍了重费米子领域的历史以及国内外的现状。总结了几种具有代表性的重费米子系统的性质，并讨论了该领域的一些前沿科学问题，特别是有关重费米子超导体、量子相变和强相关电子系统中的奇异拓扑态。
As typical examples of strongly correlated electron systems, heavy fermion materials exhibit diverse quantum ground states such as antiferromagnetic order, ferromagnetic order, non-Fermi-liquid phases, unconventional superconductivity, quantum spin liquids, orbital order and topological order. In contrast to other strongly correlated electron systems, heavy fermion systems have relatively small characteristic energy scales, which allows different quantum states to be tuned continuously by using external parameters such as pressure, magnetic field and chemical doping. Heavy fermion materials thus serve as ideal systems for studying quantum phase transitions, superconductivity and their interplay. In this review, we briefly introduce the history of the field of heavy fermions and the current status both in China and in other countries. The properties of several representative heavy fermion systems are summarized, and some frontier scientific issues in this field are discussed, in particular, concerning heavy fermion superconductors, quantum phase transitions and exotic topological states in strongly correlated electron systems.