Pristine quantum criticality in a Kondo semimetal.

Pristine quantum criticality in a Kondo semimetal.
复制标题

DOI:
10.1126/sciadv.abf9134
复制
发表时间:
2021-05
期刊:
影响因子:
13.6
通讯作者:
Paschen S
Paschen S
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Fuhrman WT;Sidorenko A;Hänel J;Winkler H;Prokofiev A;Rodriguez-Rivera JA;Qiu Y;Blaha P;Si Q;Broholm CL;Paschen S

文献摘要

参考文献

被引文献

相似文献

热力学和非弹性中子散射数据证明量子临界候选Weyl-Kondo半金属的动力学标度。在不同类别的强关联电子系统中观察量子临界性有助于建立有序原则,发现新相,并确定相关的自由度和相互作用。到目前为止,焦点一直是绝缘体和金属。半金属作为具有非平凡拓扑结构的候选相而引起了人们极大的兴趣,但在实验中却很少被探索。在这里,我们研究近藤半金属CeRu 4Sn 6的磁化率,比热,非弹性中子散射实验。磁格吕内辛比的幂律发散表明,出乎意料的是,这种化合物在没有调谐的情况下是量子临界的。在整个布里渊区的中子响应的动态能量超过温度标度和静态均匀磁化率的温度依赖性,表明温度是唯一的能量尺度的临界。这种行为,这已与近藤破坏量子临界在金属系统中,可能是通用的半金属设置。
Thermodynamic and inelastic neutron scattering data evidence dynamical scaling in quantum critical candidate Weyl-Kondo semimetal. The observation of quantum criticality in diverse classes of strongly correlated electron systems has been instrumental in establishing ordering principles, discovering new phases, and identifying the relevant degrees of freedom and interactions. At focus so far have been insulators and metals. Semimetals, which are of great current interest as candidate phases with nontrivial topology, are much less explored in experiments. Here, we study the Kondo semimetal CeRu4Sn6 by magnetic susceptibility, specific heat, and inelastic neutron scattering experiments. The power-law divergence of the magnetic Grünesien ratio reveals that, unexpectedly, this compound is quantum critical without tuning. The dynamical energy over temperature scaling in the neutron response throughout the Brillouin zone and the temperature dependence of the static uniform susceptibility, indicate that temperature is the only energy scale in the criticality. Such behavior, which has been associated with Kondo destruction quantum criticality in metallic systems, could be generic in the semimetal setting.
DOI: 10.1038/s41467-021-21698-z
发表时间: 2021-03-02
影响因子: 16.6
作者:
Kavai M;Friedman J;Sherman K;Gong M;Giannakis I;Hajinazar S;Hu H;Grefe SE;Leshen J;Yang Q;Nakatsuji S;Kolmogorov AN;Si Q;Lawler M;Aynajian P
通讯作者: Aynajian P
重毛顶系统中的Weyl-Kondo半学。
DOI: 10.1073/pnas.1715851115
发表时间: 2018-01-02
影响因子: 11.1
作者:
Lai HH;Grefe SE;Paschen S;Si Q
通讯作者: Si Q
DOI: 10.1103/physrevlett.118.246601
发表时间: 2017-06-16
影响因子: 8.6
作者:
Dzsaber, S.;Prochaska, L.;Paschen, S.
通讯作者: Paschen, S.
DOI: 10.1088/0953-8984/13/22/312
发表时间: 2001-06-04
影响因子: 2.7
作者:
Bauer, ED;Slebarski, A;Maple, MB
通讯作者: Maple, MB
DOI: 10.1073/pnas.1005036107
发表时间: 2010-08-03
影响因子: 11.1
作者:
Jaramillo, R.;Feng, Yejun;Rosenbaum, T. F.
通讯作者: Rosenbaum, T. F.