Weak hybridization and isolated localized magnetic moments in the compounds CeT2Cd20 (T = Ni, Pd)

White, B. D.; Yazici, D.; Ho, P. -C.; Kanchanavatee, N.; Pouse, N.; Fang, Y.; Breindel, A. J.; Friedman, A. J.; Maple, M. B.

doi:10.1088/0953-8984/27/31/315602

Title: Weak hybridization and isolated localized magnetic moments in the compounds CeT₂Cd₂₀ (T = Ni, Pd)

Journal Article · Mon Jul 20 00:00:00 EDT 2015 · Journal of Physics. Condensed Matter

DOI:https://doi.org/10.1088/0953-8984/27/31/315602· OSTI ID:1257509

White, B. D. ^[1]; Yazici, D. ^[1]; Ho, P. -C. ^[2]; Kanchanavatee, N. ^[1]; Pouse, N. ^[1]; Fang, Y. ^[1]; Breindel, A. J. ^[1]; Friedman, A. J. ^[1]; Maple, M. B. ^[1]

Univ. of California, San Diego, La Jolla, CA (United States)
California State Univ., Fresno, CA (United States)

Here, we report the physical properties of single crystals of the compounds CeT₂Cd₂₀ (T = Ni, Pd) that were grown in a molten Cd flux. Large separations of ~6.7- 6.8 Å between Ce ions favor the localized magnetic moments that are observed in measurements of the magnetization. The strength of the Ruderman-Kittel-Kasuya- Yosida magnetic exchange interaction between the localized moments is severely limited by the large Ce-Ce separations and by weak hybridization between localized Ce 4f and itinerant electron states. Measurements of electrical resistivity performed down to 0.138 K were unable to observe evidence for the emergence of magnetic order; however, magnetically-ordered ground states with very low transition temperatures are still expected in these compounds despite the isolated nature of the localized magnetic moments. Such a fragile magnetic order could be highly susceptible to tuning via applied pressure, but evidence for the emergence of magnetic order has not been observed so far in our measurements up to 2.5 GPa.

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Research Organization:: Univ. of California, San Diego, CA (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: NA0002909; NA0001841; FG02-04-ER46105

OSTI ID:: 1257509

Alternate ID(s):: OSTI ID: 1238953

Journal Information:: Journal of Physics. Condensed Matter, Vol. 27, Issue 31; ISSN 0953-8984

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 11 works

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