Spin excitations in optimally P-doped BaFe(As $_{0.7}$ P $_{0.3}$ ) superconductor

Hu, D.*; Yin, Z.*; Zhang, W.*; Ewings, R. A.*; Ikeuchi, Kazuhiko*; Nakamura, Mitsutaka ; Roessli, B.*; Wei, Y.*; Zhao, L.*; Chen, G.*; Li, S.*; Luo, H.*; Haule, K.*; Kotliar, G.*; Dai, P.*

The temperature and energy dependence of spin excitations in an optimally P-doped BaFe(As $_{0.7}$ P $_{0.3}$ ) superconductor (T = 30 K) were studied by using inelastic neutron scattering. Experimental results are consistent with calculations from a combined density functional theory and dynamical mean field theory, and suggest that the decreased average pnictogen height in BaFe(As $_{0.7}$ P $_{0.3}$ ) reduces the strength of electron correlations and increases the effective bandwidth of magnetic excitation.

Language	:	English
Journal	:	Physical Review B
Volume	:	94
Number	:	9
Pages	:	p.094504_1 - 094504_7
Publication Year/Month	:	2016/09
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PDF	:	AA2016-0252.pdf:2.18MB
Paper URL	:	https://doi.org/10.1103/PhysRevB.94.094504
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Keywords	:	no keyword
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Registration No. : AA20160252
JAEA Abstracts No. : 44001413
Paper Submission No. : 18080

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Spin excitations in optimally P-doped BaFe(AsP) superconductor

Spin excitations in optimally P-doped BaFe(As $_{0.7}$ P $_{0.3}$ ) superconductor