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The role of crystal field excitations in YbInCu4 (CROSBI ID 539226)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija

Aviani, Ivica ; Očko, Miroslav ; Starešinić, Damir ; Biljaković, Katica ; Lojdl, Alojz ; Hemberger, J., Sarrao, John-Louis The role of crystal field excitations in YbInCu4 // ESM'07 Book of Abstracts. Sinaia, 2007. str. 19-19

Podaci o odgovornosti

Aviani, Ivica ; Očko, Miroslav ; Starešinić, Damir ; Biljaković, Katica ; Lojdl, Alojz ; Hemberger, J., Sarrao, John-Louis

engleski

The role of crystal field excitations in YbInCu4

The Y-doping suppresses the valence transition in YbInCu4 preserving the magnetic properties of the high-temperature local-moment (LM) phase essentially unchanged down to the lowest temperatures. We report the specific heat, magnetic susceptibility and transport data of the LM phase of Yb0.5Y0.5InCu4 in the temperature range between 2 K and 300 K, and magnetic fields of 0 and 5 T. We found this sample to be the most convenient for study the properties of the LM phase at low temperatures. The obtained data can be well explained within the local-moment crystal field theory for the two close-lying Yb 4f ground state Γ 6 and Γ 7 doublets, and Γ 8 excited-state quartet, and with a very weak or absent Kondo interaction. The crystal field scheme and the Kondo scale proposed by this work, which differ from the ones commonly accepted in literature, can help in better understanding of the interactions that are responsible for the onset of the valence transition and also to elucidate the low-temperature phenomena observed in the LM phase of YbInCu4.

YbInCu4; crystal field

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Podaci o prilogu

19-19.

2007.

objavljeno

Podaci o matičnoj publikaciji

ESM'07 Book of Abstracts

Sinaia:

Podaci o skupu

Exotic States in Materials with Strongly Correlated Electrons

predavanje

07.09.2007-10.09.2007

Sinaia, Rumunjska

Povezanost rada

Fizika