Exchange field effect in the crystal-field ground state of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>Ce</mml:mi><mml:mi>M</mml:mi><mml:msub><mml:mi>Al</mml:mi><mml:mn>4</mml:mn></mml:msub><mml:msub><mml:mi>Si</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>

Chen, K.; Strigari, F.; Sundermann, Martin; Agrestini, S.; Ghimire, Nirmal; Lin, Shi-Zeng; Batista, Cristian D.; Bauer, E. D.; Thompson, J. D.; Otero, Edwige; Tanaka, A.; Severing, A.

doi:10.1103/physrevb.94.115111

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2018

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“…The data simulation has been performed with the full multiplet code XTLS-830 39 as described previously. 11,12,41,47…”

Section: Methods and Experimental Detailsmentioning

confidence: 99%

Tuning the hybridization and magnetic ground state of electron and hole doped CeOs2Al10 : An x-ray spectroscopy study

et al. 2018

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Here we present linear and circular polarized soft x-ray absorption spectroscopy (XAS) data at the Ce M4,5 edges of the electron (Ir) and hole-doped (Re) Kondo semiconductor CeOs2Al10. Both substitutions have a strong impact on the unusual high Néel temperature, TN =28.5 K, and also the direction of the ordered moment in case of Ir. The substitution dependence of the linear dichroism is weak thus validating the crystal-field description of CeOs2Al10 being representative for the Re and Ir substituted compounds. The impact of electron-and hole-doping on the hybridization between conduction and 4f electrons is related to the amount of f 0 in the ground state and reduction of x-ray magnetic circular dichroism. A relationship of cf -hybridization strength and enhanced TN is discussed. The direction and doping dependence of the circular dichroism strongly supports the idea of strong Kondo screening along the crystallographic a direction.

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“…The data simulation has been performed with the full multiplet code XTLS-830 39 as described previously. 11,12,41,47…”

Section: Methods and Experimental Detailsmentioning

confidence: 99%