Inelastic neutron scattering studies on the crystal field excitations in superconducting NdFeAsO0.85F0.15

Peng Cheng; Wei Bao; Sergey Danilkin; Tiesong Zhao; Jieming Sheng; Juanjuan Liu; Wei Luo; Jinchen Wang

doi:10.1155/2015/605160

Inelastic neutron scattering studies on the crystal field excitations in superconducting NdFeAsO_0.85F_0.15

Peng Cheng^*, Wei Bao, Sergey Danilkin, Tiesong Zhao, Jieming Sheng, Juanjuan Liu, Wei Luo, Jinchen Wang

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

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Abstract

Inelastic neutron scattering experiments were performed on polycrystalline samples of NdFeAsO_0.85F_0.15 over a wide temperature range (3 K-250 K). Based on the analysis of the experimental data, a Nd³⁺ CF energy level scheme is proposed to give a consistent explanation about the observed CF transitions. The observed extra ground-state CF transitions could not be simply explained by the transitions between five Kramers doublets split from the Nd³⁺ ⁴I_9/2 ground state in the C_4v point symmetry. A reliable explanation would be a superposition of crystal fields due to different local symmetries around the Nd³⁺ ions induced by the fluorine doping.

Original language	English
Article number	605160
Journal	Advances in Condensed Matter Physics
Volume	2015
DOIs	https://doi.org/10.1155/2015/605160
Publication status	Published - 2015
Externally published	Yes

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title = "Inelastic neutron scattering studies on the crystal field excitations in superconducting NdFeAsO0.85F0.15",

abstract = "Inelastic neutron scattering experiments were performed on polycrystalline samples of NdFeAsO0.85F0.15 over a wide temperature range (3 K-250 K). Based on the analysis of the experimental data, a Nd3+ CF energy level scheme is proposed to give a consistent explanation about the observed CF transitions. The observed extra ground-state CF transitions could not be simply explained by the transitions between five Kramers doublets split from the Nd3+ 4I9/2 ground state in the C4v point symmetry. A reliable explanation would be a superposition of crystal fields due to different local symmetries around the Nd3+ ions induced by the fluorine doping.",

author = "Peng Cheng and Wei Bao and Sergey Danilkin and Tiesong Zhao and Jieming Sheng and Juanjuan Liu and Wei Luo and Jinchen Wang",

year = "2015",

doi = "10.1155/2015/605160",

language = "English",

volume = "2015",

journal = "Advances in Condensed Matter Physics",

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T1 - Inelastic neutron scattering studies on the crystal field excitations in superconducting NdFeAsO0.85F0.15

AU - Cheng, Peng

AU - Bao, Wei

AU - Danilkin, Sergey

AU - Zhao, Tiesong

AU - Sheng, Jieming

AU - Liu, Juanjuan

AU - Luo, Wei

AU - Wang, Jinchen

PY - 2015

Y1 - 2015

N2 - Inelastic neutron scattering experiments were performed on polycrystalline samples of NdFeAsO0.85F0.15 over a wide temperature range (3 K-250 K). Based on the analysis of the experimental data, a Nd3+ CF energy level scheme is proposed to give a consistent explanation about the observed CF transitions. The observed extra ground-state CF transitions could not be simply explained by the transitions between five Kramers doublets split from the Nd3+ 4I9/2 ground state in the C4v point symmetry. A reliable explanation would be a superposition of crystal fields due to different local symmetries around the Nd3+ ions induced by the fluorine doping.

AB - Inelastic neutron scattering experiments were performed on polycrystalline samples of NdFeAsO0.85F0.15 over a wide temperature range (3 K-250 K). Based on the analysis of the experimental data, a Nd3+ CF energy level scheme is proposed to give a consistent explanation about the observed CF transitions. The observed extra ground-state CF transitions could not be simply explained by the transitions between five Kramers doublets split from the Nd3+ 4I9/2 ground state in the C4v point symmetry. A reliable explanation would be a superposition of crystal fields due to different local symmetries around the Nd3+ ions induced by the fluorine doping.

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U2 - 10.1155/2015/605160

DO - 10.1155/2015/605160

M3 - RGC 21 - Publication in refereed journal

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JO - Advances in Condensed Matter Physics

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