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Title: Dynamic Spin-Lattice Coupling and Nematic Fluctuations in NaFeAs

Abstract

We use inelastic neutron scattering to study acoustic phonons and spin excitations in single crystals of NaFeAs, a parent compound of iron-pnictide superconductors. NaFeAs exhibits a tetragonal-to-orthorhombic structural transition at Ts ≈ 58 K and a collinear antiferromagnetic order at TN ≈ 45 K. While longitudinal and out-of-plane transverse acoustic phonons behave as expected, the in-plane transverse acoustic phonons reveal considerable softening on cooling to Ts and then harden on approaching TN before saturating below TN. In addition, we find that spin-spin correlation lengths of low-energy magnetic excitations within the FeAs layer and along the c axis increase dramatically below Ts and show a weak anomaly across TN. These results suggest that the electronic nematic phase present in the paramagnetic tetragonal phase is closely associated with dynamic spin-lattice coupling, possibly arising from the one-phonon–two-magnon mechanism.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1439917
Alternate Identifier(s):
OSTI ID: 1509571
Grant/Contract Number:  
SC0012311; AC05-00OR22725
Resource Type:
Published Article
Journal Name:
Physical Review. X
Additional Journal Information:
Journal Name: Physical Review. X Journal Volume: 8 Journal Issue: 2; Journal ID: ISSN 2160-3308
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Li, Yu, Yamani, Zahra, Song, Yu, Wang, Weiyi, Zhang, Chenglin, Tam, David W., Chen, Tong, Hu, Ding, Xu, Zhuang, Chi, Songxue, Xia, Ke, Zhang, Li, Cui, Shifeng, Guo, Wenan, Fang, Ziming, Liu, Yi, and Dai, Pengcheng. Dynamic Spin-Lattice Coupling and Nematic Fluctuations in NaFeAs. United States: N. p., 2018. Web. doi:10.1103/PhysRevX.8.021056.
Li, Yu, Yamani, Zahra, Song, Yu, Wang, Weiyi, Zhang, Chenglin, Tam, David W., Chen, Tong, Hu, Ding, Xu, Zhuang, Chi, Songxue, Xia, Ke, Zhang, Li, Cui, Shifeng, Guo, Wenan, Fang, Ziming, Liu, Yi, & Dai, Pengcheng. Dynamic Spin-Lattice Coupling and Nematic Fluctuations in NaFeAs. United States. doi:10.1103/PhysRevX.8.021056.
Li, Yu, Yamani, Zahra, Song, Yu, Wang, Weiyi, Zhang, Chenglin, Tam, David W., Chen, Tong, Hu, Ding, Xu, Zhuang, Chi, Songxue, Xia, Ke, Zhang, Li, Cui, Shifeng, Guo, Wenan, Fang, Ziming, Liu, Yi, and Dai, Pengcheng. Fri . "Dynamic Spin-Lattice Coupling and Nematic Fluctuations in NaFeAs". United States. doi:10.1103/PhysRevX.8.021056.
@article{osti_1439917,
title = {Dynamic Spin-Lattice Coupling and Nematic Fluctuations in NaFeAs},
author = {Li, Yu and Yamani, Zahra and Song, Yu and Wang, Weiyi and Zhang, Chenglin and Tam, David W. and Chen, Tong and Hu, Ding and Xu, Zhuang and Chi, Songxue and Xia, Ke and Zhang, Li and Cui, Shifeng and Guo, Wenan and Fang, Ziming and Liu, Yi and Dai, Pengcheng},
abstractNote = {We use inelastic neutron scattering to study acoustic phonons and spin excitations in single crystals of NaFeAs, a parent compound of iron-pnictide superconductors. NaFeAs exhibits a tetragonal-to-orthorhombic structural transition at Ts ≈ 58 K and a collinear antiferromagnetic order at TN ≈ 45 K. While longitudinal and out-of-plane transverse acoustic phonons behave as expected, the in-plane transverse acoustic phonons reveal considerable softening on cooling to Ts and then harden on approaching TN before saturating below TN. In addition, we find that spin-spin correlation lengths of low-energy magnetic excitations within the FeAs layer and along the c axis increase dramatically below Ts and show a weak anomaly across TN. These results suggest that the electronic nematic phase present in the paramagnetic tetragonal phase is closely associated with dynamic spin-lattice coupling, possibly arising from the one-phonon–two-magnon mechanism.},
doi = {10.1103/PhysRevX.8.021056},
journal = {Physical Review. X},
number = 2,
volume = 8,
place = {United States},
year = {2018},
month = {6}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevX.8.021056

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Cited by: 3 works
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Works referenced in this record:

Electronic nematic susceptibility of iron-based superconductors
journal, January 2016


Symmetry-breaking orbital anisotropy observed for detwinned Ba(Fe1-xCox)2As2 above the spin density wave transition
journal, April 2011

  • Yi, M.; Lu, D.; Chu, J. -H.
  • Proceedings of the National Academy of Sciences, Vol. 108, Issue 17
  • DOI: 10.1073/pnas.1015572108

Symmetry breaking via orbital-dependent reconstruction of electronic structure in detwinned NaFeAs
journal, February 2012


Spin-phonon interactions in a Heisenberg antiferromagnet. II. The phonon spectrum and spin-lattice relaxation rate
journal, August 1974


Ising and spin orders in the iron-based superconductors
journal, July 2008


Nematic State of Pnictides Stabilized by Interplay between Spin, Orbital, and Lattice Degrees of Freedom
journal, July 2013


Impact of uniaxial pressure on structural and magnetic phase transitions in electron-doped iron pnictides
journal, April 2016


Nematic spin correlations in the tetragonal state of uniaxial-strained BaFe2-xNixAs2
journal, July 2014


Phonons in doped and undoped BaFe 2 As 2 investigated by inelastic x-ray scattering
journal, December 2009


Manifestations of nematic degrees of freedom in the magnetic, elastic, and superconducting properties of the iron pnictides
journal, July 2012


Spin waves and magnetic exchange interactions in CaFe2As2
journal, July 2009

  • Zhao, Jun; Adroja, D. T.; Yao, Dao-Xin
  • Nature Physics, Vol. 5, Issue 8
  • DOI: 10.1038/nphys1336

Cooper pairing in non-Fermi liquids
journal, March 2015


Consistent model of magnetism in ferropnictides
journal, March 2011

  • Wysocki, Aleksander L.; Belashchenko, Kirill D.; Antropov, Vladimir P.
  • Nature Physics, Vol. 7, Issue 6
  • DOI: 10.1038/nphys1933

Electron doping evolution of structural and antiferromagnetic phase transitions in NaFe 1 x Co x As iron pnictides
journal, July 2016


Ferro-Orbital Order and Strong Magnetic Anisotropy in the Parent Compounds of Iron-Pnictide Superconductors
journal, December 2009


Anisotropic impurity states, quasiparticle scattering and nematic transport in underdoped Ca(Fe1−xCox)2As2
journal, February 2013

  • Allan, M. P.; Chuang, T-M.; Massee, F.
  • Nature Physics, Vol. 9, Issue 4
  • DOI: 10.1038/nphys2544

Nematic Susceptibility of Hole-Doped and Electron-Doped Ba F e 2 As 2 Iron-Based Superconductors from Shear Modulus Measurements
journal, January 2014


Effect of Pnictogen Height on Spin Waves in Iron Pnictides
journal, May 2014


Influence of magnetism on phonons in CaFe 2 As 2 as seen via inelastic x-ray scattering
journal, June 2009


Spin-phonon interactions in a Heisenberg antiferromagnet. I. The spin-wave spectrum
journal, August 1974


Orbital-driven nematicity in FeSe
journal, November 2014

  • Baek, S-H.; Efremov, D. V.; Ok, J. M.
  • Nature Materials, Vol. 14, Issue 2
  • DOI: 10.1038/nmat4138

Effect of Nematic Order on the Low-Energy Spin Fluctuations in Detwinned BaFe 1.935 Ni 0.065 As 2
journal, November 2016


Magnon-phonon coupling effects on the indirect K -edge resonant inelastic x-ray scattering spectrum of a two-dimensional Heisenberg antiferromagnet
journal, October 2017


Effects of Nematic Fluctuations on the Elastic Properties of Iron Arsenide Superconductors
journal, October 2010


Nematic Fermi Fluids in Condensed Matter Physics
journal, August 2010


Ubiquitous signatures of nematic quantum criticality in optimally doped Fe-based superconductors
journal, May 2016


Gradual destruction of magnetism in the superconducting family NaFe 1 x Co x As
journal, February 2012


Origin of the Tetragonal-to-Orthorhombic Phase Transition in FeSe: A Combined Thermodynamic and NMR Study of Nematicity
journal, January 2015


In-plane electronic anisotropy of underdoped ‘122’ Fe-arsenide superconductors revealed by measurements of detwinned single crystals
journal, September 2011


Close correlation between magnetic properties and the soft phonon mode of the structural transition in BaFe 2 As 2 and SrFe 2 As 2
journal, April 2015


A key role for unusual spin dynamics in ferropnictides
journal, December 2008

  • Mazin, I. I.; Johannes, M. D.
  • Nature Physics, Vol. 5, Issue 2
  • DOI: 10.1038/nphys1160

Ultrafast transient generation of spin-density-wave order in the normal state of BaFe2As2 driven by coherent lattice vibrations
journal, April 2012

  • Kim, K. W.; Pashkin, A.; Schäfer, H.
  • Nature Materials, Vol. 11, Issue 6
  • DOI: 10.1038/nmat3294

Antiferromagnetic order and spin dynamics in iron-based superconductors
journal, August 2015


Structural Quantum Criticality and Superconductivity in Iron-Based Superconductor Ba(Fe 1- x Co x ) 2 As 2
journal, February 2012

  • Yoshizawa, Masahito; Kimura, Daichi; Chiba, Taiji
  • Journal of the Physical Society of Japan, Vol. 81, Issue 2
  • DOI: 10.1143/JPSJ.81.024604

The influence of the structural transition on magnetic fluctuations in NaFeAs
journal, May 2016


Spontaneous decays of magneto-elastic excitations in non-collinear antiferromagnet (Y,Lu)MnO3
journal, October 2016

  • Oh, Joosung; Le, Manh Duc; Nahm, Ho-Hyun
  • Nature Communications, Vol. 7, Issue 1
  • DOI: 10.1038/ncomms13146

Spin dynamics of a J 1 - J 2 - K model for the paramagnetic phase of iron pnictides
journal, August 2012


Temperature dependence of the paramagnetic spin excitations in BaFe 2 As 2
journal, October 2012


Enhancement of Superconductivity near a Nematic Quantum Critical Point
journal, March 2015


Anisotropic In-Plane Resistivity in the Nematic Phase of the Iron Pnictides
journal, November 2011


Ultrafast observation of critical nematic fluctuations and giant magnetoelastic coupling in iron pnictides
journal, February 2014

  • Patz, Aaron; Li, Tianqi; Ran, Sheng
  • Nature Communications, Vol. 5, Issue 1
  • DOI: 10.1038/ncomms4229

Structural and magnetic phase transitions in Na 1 δ FeAs
journal, July 2009


Colloquium : Spontaneous magnon decays
journal, January 2013


Electron-Hole Symmetry and Magnetic Coupling in Antiferromagnetic LaFeAsO
journal, July 2008


Magnon damping by magnon-phonon coupling in manganese perovskites
journal, April 2000


Lattice thermal conductivity of antiferromagnetic insulators
journal, April 1980


Orbital ordering induces structural phase transition and the resistivity anomaly in iron pnictides
journal, December 2009


What drives nematic order in iron-based superconductors?
journal, January 2014

  • Fernandes, R. M.; Chubukov, A. V.; Schmalian, J.
  • Nature Physics, Vol. 10, Issue 2
  • DOI: 10.1038/nphys2877

Phonon softening near the structural transition in BaFe 2 As 2 observed by inelastic x-ray scattering
journal, December 2011


Spin-orbital frustrations and anomalous metallic state in iron-pnictide superconductors
journal, February 2009


Theory of electron nematic order in LaFeAsO
journal, June 2008


Spin fluctuations in iron pnictides and chalcogenides: From antiferromagnetism to superconductivity
journal, January 2016


Similar zone-center gaps in the low-energy spin-wave spectra of Na 1 δ FeAs and BaFe 2 As 2
journal, July 2012


Visualization of electron nematicity and unidirectional antiferroic fluctuations at high temperatures in NaFeAs
journal, February 2014

  • Rosenthal, E. P.; Andrade, E. F.; Arguello, C. J.
  • Nature Physics, Vol. 10, Issue 3
  • DOI: 10.1038/nphys2870

Structure, antiferromagnetism and superconductivity of the layered iron arsenide NaFeAs
journal, January 2009

  • Parker, Dinah R.; Pitcher, Michael J.; Baker, Peter J.
  • Chemical Communications, Issue 16
  • DOI: 10.1039/b818911k