Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Effect of Pnictogen Height on Spin Waves in Iron Pnictides

Published

Author(s)

Chenglin Zhang, Leland Harriger, Zhiping Yin, Weicheng Lv, Miaoyin Wang, Guotai Tan, Yu Song, D. L. Abernathy, Wei Tian, Takeshi Egami, Kristjan Haule, Gabriel Kotliar, Pengcheng Dai

Abstract

We use inelastic neutron scattering to study spin waves in the antiferromagnetic ordered phase of iron pnictide NaFeAs throughout the Brillouin zone. Comparing with the well-studied AFe2As2 (A = Ca,Sr,Ba) family, spin waves in NaFeAs have considerably lower zone boundary energies and more isotropic effective in-plane magnetic exchange couplings. These results are consistent with calculations from a combined density functional theory (DFT) and dynamical mean field theory (DMFT), and provide strong evidence that pnictogen height controls the strength of electron-electron correlations, and consequently the effective bandwidth of magnetic excitations.
Citation
Physical Review Letters
Volume
112
Issue
21

Keywords

superconductivity, strongly correlated electrons

Citation

Zhang, C. , Harriger, L. , Yin, Z. , Lv, W. , Wang, M. , Tan, G. , Song, Y. , Abernathy, D. , Tian, W. , Egami, T. , Haule, K. , Kotliar, G. and Dai, P. (2014), Effect of Pnictogen Height on Spin Waves in Iron Pnictides, Physical Review Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=916202 (Accessed June 21, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created May 27, 2014, Updated October 12, 2021