Inelastic Neutron Scattering Studies on the Crystal Field Excitations in Superconducting NdFeAsO0.85F0.15

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 transitio...

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Main Authors:	Peng Cheng, Wei Bao, Sergey Danilkin, Tiesong Zhao, Jieming Sheng, Juanjuan Liu, Wei Luo, Jinchen Wang
Format:	Article
Language:	English
Published:	Hindawi Limited 2015-01-01
Series:	Advances in Condensed Matter Physics
Online Access:	http://dx.doi.org/10.1155/2015/605160

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spelling	doaj-816ac6622c9b4572b833cd7892b9e8e72020-11-25T00:12:50ZengHindawi LimitedAdvances in Condensed Matter Physics1687-81081687-81242015-01-01201510.1155/2015/605160605160Inelastic Neutron Scattering Studies on the Crystal Field Excitations in Superconducting NdFeAsO0.85F0.15Peng Cheng0Wei Bao1Sergey Danilkin2Tiesong Zhao3Jieming Sheng4Juanjuan Liu5Wei Luo6Jinchen Wang7Department of Physics, Renmin University of China, Beijing 100872, ChinaDepartment of Physics, Renmin University of China, Beijing 100872, ChinaBragg Institute, Australian Nuclear Science and Technology Organization, Locked Bag 2001, Kirrawee DC, NSW 2232, AustraliaDepartment of Physics, Renmin University of China, Beijing 100872, ChinaDepartment of Physics, Renmin University of China, Beijing 100872, ChinaDepartment of Physics, Renmin University of China, Beijing 100872, ChinaDepartment of Physics, Renmin University of China, Beijing 100872, ChinaDepartment of Physics, Renmin University of China, Beijing 100872, ChinaInelastic 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.http://dx.doi.org/10.1155/2015/605160
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Peng Cheng Wei Bao Sergey Danilkin Tiesong Zhao Jieming Sheng Juanjuan Liu Wei Luo Jinchen Wang
spellingShingle	Peng Cheng Wei Bao Sergey Danilkin Tiesong Zhao Jieming Sheng Juanjuan Liu Wei Luo Jinchen Wang Inelastic Neutron Scattering Studies on the Crystal Field Excitations in Superconducting NdFeAsO0.85F0.15 Advances in Condensed Matter Physics
author_facet	Peng Cheng Wei Bao Sergey Danilkin Tiesong Zhao Jieming Sheng Juanjuan Liu Wei Luo Jinchen Wang
author_sort	Peng Cheng
title	Inelastic Neutron Scattering Studies on the Crystal Field Excitations in Superconducting NdFeAsO0.85F0.15
title_short	Inelastic Neutron Scattering Studies on the Crystal Field Excitations in Superconducting NdFeAsO0.85F0.15
title_full	Inelastic Neutron Scattering Studies on the Crystal Field Excitations in Superconducting NdFeAsO0.85F0.15
title_fullStr	Inelastic Neutron Scattering Studies on the Crystal Field Excitations in Superconducting NdFeAsO0.85F0.15
title_full_unstemmed	Inelastic Neutron Scattering Studies on the Crystal Field Excitations in Superconducting NdFeAsO0.85F0.15
title_sort	inelastic neutron scattering studies on the crystal field excitations in superconducting ndfeaso0.85f0.15
publisher	Hindawi Limited
series	Advances in Condensed Matter Physics
issn	1687-8108 1687-8124
publishDate	2015-01-01
description	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.
url	http://dx.doi.org/10.1155/2015/605160
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Inelastic Neutron Scattering Studies on the Crystal Field Excitations in Superconducting NdFeAsO0.85F0.15

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