AI Article Synopsis
- The study uses resonant inelastic x-ray scattering (RIXS) to analyze spin excitations in uniaxially-strained and unstrained FeSe_{1-x}S_{x} samples, finding that spin excitations show minimal variation with sulfur doping.
- RIXS results indicate that a high-energy spin-excitation anisotropy persists across a range of doping levels (0≤x≤0.21) and remains significant at temperatures above 200 K, peaking near the nematic quantum critical doping point (x_{c}≈0.17).
- The findings suggest that spin fluctuations are crucial for electronic nematicity and illustrate how uniaxial strain can modulate spin excitations in materials with strong magnet
Article Abstract
We use resonant inelastic x-ray scattering (RIXS) at the Fe-L_{3} edge to study the spin excitations of uniaxial-strained and unstrained FeSe_{1-x}S_{x} (0≤x≤0.21) samples. The measurements on unstrained samples reveal dispersive spin excitations in all doping levels, which show only minor doping dependence in energy dispersion, lifetime, and intensity, indicating that high-energy spin excitations are only marginally affected by sulfur doping. RIXS measurements on uniaxial-strained samples reveal that the high-energy spin-excitation anisotropy observed previously in FeSe is also present in the doping range 0
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| http://dx.doi.org/10.1103/PhysRevLett.132.016501 | DOI Listing |
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