Elastic constants and quadrupolar interactions in the (LaCe)B6 series

Lemmens, P.; Ewert, S.; Thalmeier, Peter; Lenz, D.; Winzer, Klaus

doi:10.1007/bf01307901

Cited by 8 publications

(2 citation statements)

References 23 publications

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“…The most interesting case is perhaps the series Ce 1−x La x B 6 (0 ≤ x ≤ 1) where the magnetic Ce 3+ sublattice is progressively diluted with nonmagnetic La 3+ which has no 4 f -electrons. This will have two main consequences: Firstly the inter-site multipole interactions will be progressively weakened [82] suppressing the tendency to multipolar order. Secondly the coherent heavy-fermion quasiparticle bands that exist for x 1 will gradually become site-incoherent and turn into narrow localized Kondo-resonance states.…”

Section: The Octupolar Ho Phase IV In Diluted Cementioning

confidence: 99%

Multipolar order and excitations in rare-earth boride Kondo systems

Thalmeier¹,

Akbari²,

Shiina³

2019

Preprint

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The cubic rare-earth boride series displays diverse electronic states like localized 4 f electron multiplets split by the crystal electric field (CEF), itinerant heavy-fermion quasiparticle bands of the Kondo lattice as well as gapped Kondo insulator or mixed-valent semiconductor states. Furthermore, at low temperatures fairly exotic ordered states may appear due to the "hidden" order of multipoles carried by degenerate CEF multiplets, in addition to common (dipolar) magnetic order present in many RB 6 (R = rare earth) systems. Most prominent are CeB 6 and its La-diluted alloys Rare-Earth Borides Dmytro S. Inosov (ed.

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Section: The Octupolar Ho Phase IV In Diluted Cementioning

confidence: 99%

Multipolar order and excitations in rare-earth boride Kondo systems

Thalmeier¹,

Akbari²,

Shiina³

2019

Preprint

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“…[5] Peysson et al [6] studied the lattice dynamics of LaB 6 between 35 and 500 K using a 0.9-MeV phonon channeling. Lemmens et al [7] investigated the elastic constants of the La 1−𝑥 Ce 𝑥 B 6 system by the ultrasonic measurements. In addition, there have been many works to investigate the LaB 6 crystal and its related compounds.…”

mentioning

confidence: 99%

First-Principles Calculations of Elastic and Thermal Properties of Lanthanum Hexaboride

Chen

Yao-Zheng

et al. 2009

Chinese Phys. Lett.

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The plane-wave pseudopotential method using the generalized gradient approximation within the framework of density functional theory is applied to anaylse the bulk modulus, thermal expansion coefficient and heat capacity of LaB6. The quasi-harmonic Debye model, using a set of total energy versus volume obtained with the plane-wave pseudopotential method, is applied to the study of the thermal properties and vibrational effects. We analyse the bulk modulus of LaB6 up to 1500 K. The elastic properties calculations show that our system is mechanically stable. For the heat capacity and the thermal expansion, significant differences in properties are observed above 300K. The calculated zero pressure bulk modulus is in good agreement with the experimental data. Moreover, the Debye temperatures are determined from the non-equilibrium Gibbs functions and compared to available data.

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