Simplifying strong electronic correlations in uranium: Localized uranium heavy-fermion U M2 Zn20 (M=Co,Rh) compounds

E. D. Bauer; C. Wang; V. R. Fanelli; J. M. Lawrence; E. A. Goremychkin; N. R. De Souza; F. Ronning; J. D. Thompson; A. V. Silhanek; V. Vildosola; A. M. Lobos; A. A. Aligia; S. Bobev; J. L. Sarrao

doi:10.1103/PhysRevB.78.115120

Simplifying strong electronic correlations in uranium: Localized uranium heavy-fermion U M₂ Zn₂₀ (M=Co,Rh) compounds

E. D. Bauer
, C. Wang
, V. R. Fanelli
, J. M. Lawrence
, E. A. Goremychkin
, N. R. De Souza
, F. Ronning
, J. D. Thompson
, A. V. Silhanek
, V. Vildosola
, A. M. Lobos
, A. A. Aligia
, S. Bobev
, J. L. Sarrao

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

The physical properties including magnetic susceptibility, magnetization, specific heat, and dynamic susceptibility χ″ (E) are reported for single crystals of the cubic UM₂ Zn₂₀ (M=Co,Rh) materials. Maxima in the thermodynamic data at T_max ∼10 K for both compounds and a broad peak in χ″ (E) at 5 K in UCo₂ Zn ₂₀ of width Γ=5 meV indicate a heavy-fermion state characterized by a Kondo temperature T_K ∼20-30 K arising from weak hybridization of f - and conduction-electron states. Anderson impurity model fits to the data in the Kondo limit including crystalline electric-field effects corroborate an ionic-like uranium electronic configuration in UM ₂ Zn₂₀.

Original language	English
Article number	115120
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	78
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevB.78.115120
State	Published - Sep 29 2008
Externally published	Yes

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Bauer, E. D., Wang, C., Fanelli, V. R., Lawrence, J. M., Goremychkin, E. A., De Souza, N. R., Ronning, F., Thompson, J. D., Silhanek, A. V., Vildosola, V., Lobos, A. M., Aligia, A. A., Bobev, S., & Sarrao, J. L. (2008). Simplifying strong electronic correlations in uranium: Localized uranium heavy-fermion U M₂ Zn₂₀ (M=Co,Rh) compounds. Physical Review B - Condensed Matter and Materials Physics, 78(11), Article 115120. https://doi.org/10.1103/PhysRevB.78.115120

@article{6c709670d1704f149c6966a47892cd18,

title = "Simplifying strong electronic correlations in uranium: Localized uranium heavy-fermion U M2 Zn20 (M=Co,Rh) compounds",

abstract = "The physical properties including magnetic susceptibility, magnetization, specific heat, and dynamic susceptibility χ″ (E) are reported for single crystals of the cubic UM2 Zn20 (M=Co,Rh) materials. Maxima in the thermodynamic data at Tmax ∼10 K for both compounds and a broad peak in χ″ (E) at 5 K in UCo2 Zn 20 of width Γ=5 meV indicate a heavy-fermion state characterized by a Kondo temperature TK ∼20-30 K arising from weak hybridization of f - and conduction-electron states. Anderson impurity model fits to the data in the Kondo limit including crystalline electric-field effects corroborate an ionic-like uranium electronic configuration in UM 2 Zn20.",

author = "Bauer, \{E. D.\} and C. Wang and Fanelli, \{V. R.\} and Lawrence, \{J. M.\} and Goremychkin, \{E. A.\} and \{De Souza\}, \{N. R.\} and F. Ronning and Thompson, \{J. D.\} and Silhanek, \{A. V.\} and V. Vildosola and Lobos, \{A. M.\} and Aligia, \{A. A.\} and S. Bobev and Sarrao, \{J. L.\}",

year = "2008",

month = sep,

day = "29",

doi = "10.1103/PhysRevB.78.115120",

language = "English",

volume = "78",

journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "1098-0121",

publisher = "American Physical Society",

number = "11",

}

Bauer, ED, Wang, C, Fanelli, VR, Lawrence, JM, Goremychkin, EA, De Souza, NR, Ronning, F, Thompson, JD, Silhanek, AV, Vildosola, V, Lobos, AM, Aligia, AA, Bobev, S & Sarrao, JL 2008, 'Simplifying strong electronic correlations in uranium: Localized uranium heavy-fermion U M₂ Zn₂₀ (M=Co,Rh) compounds', Physical Review B - Condensed Matter and Materials Physics, vol. 78, no. 11, 115120. https://doi.org/10.1103/PhysRevB.78.115120

TY - JOUR

T1 - Simplifying strong electronic correlations in uranium

T2 - Localized uranium heavy-fermion U M2 Zn20 (M=Co,Rh) compounds

AU - Bauer, E. D.

AU - Wang, C.

AU - Fanelli, V. R.

AU - Lawrence, J. M.

AU - Goremychkin, E. A.

AU - De Souza, N. R.

AU - Ronning, F.

AU - Thompson, J. D.

AU - Silhanek, A. V.

AU - Vildosola, V.

AU - Lobos, A. M.

AU - Aligia, A. A.

AU - Bobev, S.

AU - Sarrao, J. L.

PY - 2008/9/29

Y1 - 2008/9/29

N2 - The physical properties including magnetic susceptibility, magnetization, specific heat, and dynamic susceptibility χ″ (E) are reported for single crystals of the cubic UM2 Zn20 (M=Co,Rh) materials. Maxima in the thermodynamic data at Tmax ∼10 K for both compounds and a broad peak in χ″ (E) at 5 K in UCo2 Zn 20 of width Γ=5 meV indicate a heavy-fermion state characterized by a Kondo temperature TK ∼20-30 K arising from weak hybridization of f - and conduction-electron states. Anderson impurity model fits to the data in the Kondo limit including crystalline electric-field effects corroborate an ionic-like uranium electronic configuration in UM 2 Zn20.

AB - The physical properties including magnetic susceptibility, magnetization, specific heat, and dynamic susceptibility χ″ (E) are reported for single crystals of the cubic UM2 Zn20 (M=Co,Rh) materials. Maxima in the thermodynamic data at Tmax ∼10 K for both compounds and a broad peak in χ″ (E) at 5 K in UCo2 Zn 20 of width Γ=5 meV indicate a heavy-fermion state characterized by a Kondo temperature TK ∼20-30 K arising from weak hybridization of f - and conduction-electron states. Anderson impurity model fits to the data in the Kondo limit including crystalline electric-field effects corroborate an ionic-like uranium electronic configuration in UM 2 Zn20.

UR - https://www.scopus.com/pages/publications/53849104775

U2 - 10.1103/PhysRevB.78.115120

DO - 10.1103/PhysRevB.78.115120

M3 - Article

AN - SCOPUS:53849104775

SN - 1098-0121

VL - 78

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 11

M1 - 115120

ER -

Simplifying strong electronic correlations in uranium: Localized uranium heavy-fermion U M₂ Zn₂₀ (M=Co,Rh) compounds

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