Weak phonon coupling to nematic quantum critical mode in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msub> <mml:mi>BaFe</mml:mi> <mml:mn>2</mml:mn> </mml:msub> <mml:msub> <mml:mrow> <mml:mo>(</mml:mo> <mml:msub> <mml:mi>

Despite intense focus on quantum critical behavior, microscopic information on the evolution of spin and nematic correlations remains scarce. Using high-resolution inelastic scattering, the authors investigate here in-plane transverse acoustic phonons in BaFe${}_{2}$(As${}_{1\ensuremath{-}x}$P${}_{x}$)${}_{2}$ near its nematic quantum critical point. The authors observe a weak coupling between the critical nematic fluctuations and the lattice near the critical regime. Together with theory, this result suggests the nature of nematicity evolves from spin-driven with strong lattice coupling in the underdoped regime to orbital-driven with weak coupling near the critical point.

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Publication Details

Journal
Physical review. B./Physical review. B
Published
2025-10-07
DOI
https://doi.org/10.1103/dpd1-mbhw
Primary Topic
Iron-based superconductors research
Type
article
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0.00
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article

Weak phonon coupling to nematic quantum critical mode in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msub> <mml:mi>BaFe</mml:mi> <mml:mn>2</mml:mn> </mml:msub> <mml:msub> <mml:mrow> <mml:mo>(</mml:mo> <mml:msub> <mml:mi>

Dung‐Hai Lee, James G. Analytis, Yu Song, R. J. Birgeneau et al.
Physical review. B./Physical review. B
Iron-based superconductors research
article

Weak phonon coupling to nematic quantum critical mode in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msub> <mml:mi>BaFe</mml:mi> <mml:mn>2</mml:mn> </mml:msub> <mml:msub> <mml:mrow> <mml:mo>(</mml:mo> <mml:msub> <mml:mi>

Dung‐Hai Lee, James G. Analytis, Yu Song, R. J. Birgeneau, Yu He, Ahmet Alatas, Daisuke Ishikawa, Jiayu Guo, Xiang Chen, Shan Wu, Amélie Baron, Ayman Said
article en

Abstract

Despite intense focus on quantum critical behavior, microscopic information on the evolution of spin and nematic correlations remains scarce. Using high-resolution inelastic scattering, the authors investigate here in-plane transverse acoustic phonons in BaFe${}_{2}$(As${}_{1\ensuremath{-}x}$P${}_{x}$)${}_{2}$ near its nematic quantum critical point. The authors observe a weak coupling between the critical nematic fluctuations and the lattice near the critical regime. Together with theory, this result suggests the nature of nematicity evolves from spin-driven with strong lattice coupling in the underdoped regime to orbital-driven with weak coupling near the critical point.

Physical review. B./Physical review. BVol. 112(17)
Canadian Institute for Advanced Research (CA), Argonne National Laboratory (US), Lawrence Berkeley National Laboratory (US), Sun Yat-sen University (CN), Santa Clara University (US), Chartered Institute for Archaeologists (GB), Yale University (US), SPring-8 (JP), Japan Synchrotron Radiation Research Institute (JP), RIKEN Center for Biosystems Dynamics Research (JP), Material Sciences (United States) (US), Advanced Algorithm and Systems (Japan) (JP), Zhejiang University (CN), University of California, Berkeley (US)
Openalex Percentile: Top 77%
Iron-based superconductors research
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