Pristine quantum criticality in a Kondo semimetal.
Pristine quantum criticality in a Kondo semimetal.
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DOI:
10.1126/sciadv.abf9134
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发表时间:
2021-05
期刊:
影响因子:
13.6
通讯作者:
Paschen S
中科院分区:
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
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.
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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
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
影响因子:
8.6
作者:
Dzsaber, S.;Prochaska, L.;Paschen, S.
通讯作者:
Paschen, S.
影响因子:
2.7
作者:
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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.