气候变化领域集成服务门户(CCPortal): Localized 4f-electrons in the quantum critical heavy fermion ferromagnet CeRh6Ge4

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DOI	10.1016/j.scib.2021.03.006
	Localized 4f-electrons in the quantum critical heavy fermion ferromagnet CeRh6Ge4
	Wang A.; Du F.; Zhang Y.; Graf D.; Shen B.; Chen Y.; Liu Y.; Smidman M.; Cao C.; Steglich F.; Yuan H.
发表日期	2021
ISSN	20959273
起始页码	1389
结束页码	1394
卷号	66 期号:14
英文摘要	Ferromagnetic quantum critical points were predicted to be prohibited in clean itinerant ferromagnetic systems, yet such a phenomenon was recently revealed in CeRh6Ge4, where the Curie temperature can be continuously suppressed to zero under a moderate hydrostatic pressure. Here we report the observation of quantum oscillations in CeRh6Ge4 from measurements using the cantilever and tunnel-diode oscillator methods in fields up to 45 T, clearly demonstrating that the ferromagnetic quantum criticality occurs in a clean system. In order to map the Fermi surface of CeRh6Ge4, we performed angle-dependent measurements of quantum oscillations at ambient pressure, and compared the results to density functional theory calculations. The results are consistent with the Ce 4f electrons remaining localized and not contributing to the Fermi surface, suggesting that localized ferromagnetism is a key factor for the occurrence of a ferromagnetic quantum critical point in CeRh6Ge4. © 2021 Science China Press
关键词	Electronic structure Ferromagnetism Heavy fermions Quantum phase transitions
英文关键词	Density functional theory; Ferromagnetism; Germanium alloys; Germanium compounds; Hydrostatic pressure; Phase transitions; 4f-electrons; Electronic.structure; Ferromagnetics; Ferromagnets; Heavy-fermion; Localised; Quantum critical; Quantum oscillations; Quantum-critical point; Quantum-phase transition; Electronic structure
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207580
作者单位	Center for Correlated Matter and Department of Physics, Zhejiang University, Hangzhou, 310058, China; Institute for Advanced Materials, Hubei Normal University, Huangshi, 435002, China; National High Magnetic Field Laboratory and Department of Physics, Florida State University, Tallahassee, FL 32306, United States; Zhejiang Province Key Laboratory of Quantum Technology and Device, Department of Physics, Zhejiang University, Hangzhou, 310058, China; Department of Physics, Hangzhou Normal University, Hangzhou, 310036, China; Max Planck Institute for Chemical Physics of Solids, Dresden, 01187, Germany; State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou, 310058, China
推荐引用方式 GB/T 7714	Wang A.,Du F.,Zhang Y.,et al. Localized 4f-electrons in the quantum critical heavy fermion ferromagnet CeRh6Ge4[J],2021,66(14).
APA	Wang A..,Du F..,Zhang Y..,Graf D..,Shen B..,...&Yuan H..(2021).Localized 4f-electrons in the quantum critical heavy fermion ferromagnet CeRh6Ge4.Science Bulletin,66(14).
MLA	Wang A.,et al."Localized 4f-electrons in the quantum critical heavy fermion ferromagnet CeRh6Ge4".Science Bulletin 66.14(2021).