Dual nature of 3 d electrons in YbT ₂ Zn ₂₀ (T = Co; Fe) evidenced by electron spin resonance

Journal Article · Wed Mar 18 00:00:00 EDT 2015 · Journal of Physics. Conference Series (Online)

DOI:https://doi.org/10.1088/1742-6596/592/1/012084· OSTI ID:1203504

Ivanshin, V. A. ^[1]; Litvinova, T. O. ^[1]; Gimranova, K. ^[1]; Sukhanov, A. A. ^[2]; Jia, S. ^[3]; Bud'ko, S. L. ^[3]; Canfield, P. C. ^[3]

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1. Kazan Federal Univ. (Russia)
2. Zavoisky Physical-Technical Inst., Kazan (Russia)
3. Ames Lab., Ames, IA (United States)

The electron spin resonance experiments were carried out in the single crystals YbFe₂Zn₂₀. The observed spin dynamics is compared with that in YbCo₂Zn₂₀ and Yb₂Co₁₂P₇ as well as with the data of inelastic neutron scattering and electronic band structure calculations. Our results provide direct evidence that 3d electrons are itinerant in YbFe₂Zn₂₀ and localized in YbCo₂Zn₂₀. Possible connection between spin paramagnetism of dense heavy fermion systems, quantum criticality effects, and ESR spectra is discussed.

• Research Organization: Ames Lab., Ames, IA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES); Kazan Federal Univ. (Russia)
• Grant/Contract Number: AC02-07CH11358
• OSTI ID: 1203504
• Journal Information: Journal of Physics. Conference Series (Online), Vol. 592; ISSN 1742-6596
• Publisher: Institute of Physics (IOP)
• Country of Publication: United States
• Language: English

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36 MATERIALS SCIENCE