Pressure induced valence change of Eu in EuFe2As2 at low temperature and high pressures probed by resonant inelastic x-ray scattering

Kumar, R S and Zhang, Y and Thamizhavel, A and Svane, A and Vaitheeswaran, G and V, Kanchana and Xiao, Y and Chow, P and Chen, C and Zhao, Y (2014) Pressure induced valence change of Eu in EuFe2As2 at low temperature and high pressures probed by resonant inelastic x-ray scattering. Applied Physics Letters, 104 (4). ISSN 0003-6951

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Abstract

The effect of pressure on the valence state of Eu in EuFe 2As2 has been investigated at high pressures up to 43 GPa at 10 K using resonant inelastic x-ray scattering and x-ray absorption spectroscopy using partial fluorescence yield. Two distinct density functional approaches have been used to complement the experiments. Our experimental results show that the Eu valence increases from a divalent state to a nearly trivalent state under application of pressure in consistence with theoretical simulations. Furthermore, our calculations show that the Eu magnetic moments prevail at high pressure up to 45 GPa

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IITH Creators:

IITH Creators	ORCiD
V, Kanchana	UNSPECIFIED

Item Type:

Article

Uncontrolled Keywords:

Density-functional approach; Divalent state; Effect of pressure; Low temperatures; Partial fluorescence yields; Resonant inelastic x-ray scattering; Theoretical simulation; Trivalent state

Subjects:

Physics

Divisions:

Department of Physics

Depositing User:

Team Library

Date Deposited:

31 Dec 2014 10:43

Last Modified:

14 Aug 2017 10:00

URI:

http://raiithold.iith.ac.in/id/eprint/1288