Charge fluctuations in Europium in metallic EuCu2Si2

E. R. Bauminger; D. Froindlich; I. Nowik; S. Ofer; I. Felner; I. Mayer

doi:10.1103/PhysRevLett.30.1053

Charge fluctuations in Europium in metallic EuCu2Si2

E. R. Bauminger^*, D. Froindlich, I. Nowik, S. Ofer, I. Felner, I. Mayer

^*Corresponding author for this work

Racah Institute of Physics

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

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Abstract

Recoilless-absorption measurements of the 21.6-keV γ ray of Eu151 in EuCu2Si2 reveal an absorption line which has a strongly temperature-dependent isomer shift. The lines fall at neither the Eu3+ nor the Eu2+ valence positions, but in between. The results are interpreted in terms of fast fluctuations (τ<3.5×10-11 sec) of an electron between the localized 4f level and the conduction band. The difference in energy between the Eu2+ and the Eu3+ states in EuCu2Si2 is found to be about 0.07 eV.

Original language	English
Pages (from-to)	1053-1056
Number of pages	4
Journal	Physical Review Letters
Volume	30
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevLett.30.1053
State	Published - 1973

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title = "Charge fluctuations in Europium in metallic EuCu2Si2",

abstract = "Recoilless-absorption measurements of the 21.6-keV γ ray of Eu151 in EuCu2Si2 reveal an absorption line which has a strongly temperature-dependent isomer shift. The lines fall at neither the Eu3+ nor the Eu2+ valence positions, but in between. The results are interpreted in terms of fast fluctuations (τ<3.5×10-11 sec) of an electron between the localized 4f level and the conduction band. The difference in energy between the Eu2+ and the Eu3+ states in EuCu2Si2 is found to be about 0.07 eV.",

author = "Bauminger, {E. R.} and D. Froindlich and I. Nowik and S. Ofer and I. Felner and I. Mayer",

year = "1973",

doi = "10.1103/PhysRevLett.30.1053",

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AU - Bauminger, E. R.

AU - Froindlich, D.

AU - Nowik, I.

AU - Ofer, S.

AU - Felner, I.

AU - Mayer, I.

PY - 1973

Y1 - 1973

N2 - Recoilless-absorption measurements of the 21.6-keV γ ray of Eu151 in EuCu2Si2 reveal an absorption line which has a strongly temperature-dependent isomer shift. The lines fall at neither the Eu3+ nor the Eu2+ valence positions, but in between. The results are interpreted in terms of fast fluctuations (τ<3.5×10-11 sec) of an electron between the localized 4f level and the conduction band. The difference in energy between the Eu2+ and the Eu3+ states in EuCu2Si2 is found to be about 0.07 eV.

AB - Recoilless-absorption measurements of the 21.6-keV γ ray of Eu151 in EuCu2Si2 reveal an absorption line which has a strongly temperature-dependent isomer shift. The lines fall at neither the Eu3+ nor the Eu2+ valence positions, but in between. The results are interpreted in terms of fast fluctuations (τ<3.5×10-11 sec) of an electron between the localized 4f level and the conduction band. The difference in energy between the Eu2+ and the Eu3+ states in EuCu2Si2 is found to be about 0.07 eV.

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Charge fluctuations in Europium in metallic EuCu2Si2

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