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  Suppression of ferromagnetism and influence of disorder in silicon-substituted CeRh6Ge4

Zhang, Y. J., Nie, Z. Y., Li, R., Li, Y. C., Yang, D. L., Shen, B., et al. (2022). Suppression of ferromagnetism and influence of disorder in silicon-substituted CeRh6Ge4. Physical Review B, 106(5): 054409, pp. 1-7. doi:10.1103/PhysRevB.106.054409.

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Zhang, Y. J.1, Author
Nie, Z. Y.1, Author
Li, R.1, Author
Li, Y. C.1, Author
Yang, D. L.1, Author
Shen, B.1, Author
Chen, Y.1, Author
Du, F.1, Author
Luo, S. S.1, Author
Su, H.1, Author
Shi, R.1, Author
Wang, S. Y.1, Author
Nicklas, M.2, Author           
Steglich, F.3, Author           
Smidman, M.1, Author
Yuan, H. Q.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Michael Nicklas, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863472              
3Frank Steglich, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863467              

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 Abstract: We report a study of isoelectronic chemical substitution in the recently discovered quantum critical ferromagnet CeRh6Ge4. Upon silicon doping, the ferromagnetic ordering temperature of CeRh6(Ge1-xSix)4 is continuously suppressed, and no transition is observed beyond xc≈0.125. Non-Fermi-liquid behavior with C/T ln(T∗/T) is observed close to xc, indicating the existence of strong quantum fluctuations, while the T-linear behavior observed upon pressurizing the parent compound is absent in the resistivity, which is likely a consequence of the disorder induced by silicon doping. Our findings show the effects of disorder on the unusual ferromagnetic quantum criticality in CeRh6Ge4, and provide further evidence for understanding the origin of this behavior. © 2022 American Physical Society.

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Language(s): eng - English
 Dates: 2022-08-082022-08-08
 Publication Status: Published in print
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 Rev. Type: -
 Identifiers: DOI: 10.1103/PhysRevB.106.054409
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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 106 (5) Sequence Number: 054409 Start / End Page: 1 - 7 Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008