The crystal-field states and the magnetism in the Kondo-lattice antiferromagnet CeRh<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="d1e881" altimg="si77.svg"><mml:msub><mml:mrow/><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:math>Si<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="d1e889" altimg="si77.svg"><mml:msub><mml:mrow/><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:math>

Radwański, R. J.; Ropka, Z.; Nalecz, D.M.

doi:10.1016/j.matchemphys.2019.04.083

Cited by 4 publications

(3 citation statements)

References 16 publications

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“…1. Our crystal-field based QUASST description [20] very well describes c 4f (T) and S 4f (T) in the whole temperature range, from zero up to measured 300 K, together with very good description below T N . A λ-type peak at 36 K is also nicely reproduced.…”

Section: Formal and Real Charge State In Ba 2 Iromentioning

confidence: 67%

Charge and crystal field electronic states in CeRh₂Si₂ and Ba₂IrO₄

Radwański

Nalecz

Ropka³

2022

J. Phys.: Conf. Ser.

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We point out the scientific importance of the increasing evidence for the existence of the discrete low-energy meV-energy states in compounds containing atoms with incomplete 4f, 5f, 3d shells and recently in iridates (5d shell). We point out that the realized charge state of the 3d/4f/5f/4d/5d atoms/ions in oxides is very close to the formal one obtained within the ionic model. In Ba2IrO4 the charge states are very close to Ba2+, Ir4+ and O2−. In CeRh2Si2, which is intermetallic and considered as a Kondo-lattice antiferromagnet, by detailed analysis of temperature dependence of the specific heat we have proved the realization of the trivalent charge state of practically all cerium ions. In the magnetic state, below TN of 36 K, the Kramers doublet becomes split and there appears a spin gap growing to 6 meV at T = 0 K.

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Section: Formal and Real Charge State In Ba 2 Iromentioning

confidence: 67%

Charge and crystal field electronic states in CeRh₂Si₂ and Ba₂IrO₄

Radwański

Nalecz

Ropka³

2022

J. Phys.: Conf. Ser.

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“…Cerium-based compounds have many exotic and interesting properties, such as heavy fermion behavior, superconductivity, magnetic order, which are believed to be originated from the strongly correlated 4f electrons and its hybridization with the conduction electrons [1][2][3][4][5][6][7] . Among these compounds, CeRh 2 Si 2 has been extensively studied for its strong crystal electric field and anisotropic crystal structure [8][9][10][11][12][13][14][15] . The de Haas-van Alphen and neutron scattering techniques have been used to reveal the hybridization of f -electrons with conduction electrons (celectrons) 8,16,17 .…”

Section: Introductionmentioning

confidence: 99%

“…On the theoretical side, many studied focused on the bulk properties and have been done by model Hamiltonian approaches and first-principles simulations [12][13][14]23 . The equilibrium volume, c/a ratio and bulk modulus of CeRh 2 Si 2 are obtained from density functional theory (DFT) calculations 23 .…”

Section: Introductionmentioning

confidence: 99%

The first-principles research on the role of surface in the heavy fermion compound CeRh$_2$Si$_2$

Wang,

Xu,

Liu

et al. 2021

Preprint

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In the heavy fermion materials, the characteristic energy scales of many exotic strongly correlated phenomena (Kondo effect, magnetic order, superconductivity, etc.) are at milli-electron-volt order, implying that the heavy fermion materials are surface sensitive. Here, we investigate the electronic structures for Si-and Ce-terminated surfaces of CeRh2Si2 by first-principles methods. Our research reveals three notable impacts of surface effects on electronic structures, which are consistent with recent angle-resolved photoemission spectroscopy (ARPES) experiments. Firstly, the relaxation of surface crystal structures changes the relative position of Fermi level, adjusts the dispersion of bands and enhances the Kondo resonance. Secondly, the decrease of the hybridization between the Ce-4f and conduction electrons in the surface layer leads to a weaker Kondo resonance peak and the shift of spin-orbit bands. Thirdly, the variation of crystal electric field around surface Ce atoms affects the splitting of Kondo resonance peaks, and also pushes down the lower-Hubbard bands of surface 4f electrons. Moreover, we find the characteristic of bulk's lower-Hubbard bands, which was overlooked in previous works. Our investigation suggests that these surface effects are potentially important and highlighted in the future researches on properties of strongly correlated materials.

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Cobalt halide complexes of 2-, 3- and 4-methoxyaniline: Syntheses, structures and magnetic behavior

et al. 2020

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The crystal-field states and the magnetism in the Kondo-lattice antiferromagnet CeRh2Si2

Cited by 4 publications

References 16 publications

Charge and crystal field electronic states in CeRh₂Si₂ and Ba₂IrO₄

Charge and crystal field electronic states in CeRh₂Si₂ and Ba₂IrO₄

The first-principles research on the role of surface in the heavy fermion compound CeRh$_2$Si$_2$

Cobalt halide complexes of 2-, 3- and 4-methoxyaniline: Syntheses, structures and magnetic behavior

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The crystal-field states and the magnetism in the Kondo-lattice antiferromagnet CeRh2Si2

Cited by 4 publications

References 16 publications

Charge and crystal field electronic states in CeRh2Si2 and Ba2IrO4

Charge and crystal field electronic states in CeRh2Si2 and Ba2IrO4

The first-principles research on the role of surface in the heavy fermion compound CeRh$_2$Si$_2$

Cobalt halide complexes of 2-, 3- and 4-methoxyaniline: Syntheses, structures and magnetic behavior

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Product

Resources

About

Charge and crystal field electronic states in CeRh₂Si₂ and Ba₂IrO₄

Charge and crystal field electronic states in CeRh₂Si₂ and Ba₂IrO₄