Ultra-low energy excitations in spin-density-wave masked ferromagnetic Nb1-yFe2+y
Our previous neutron scattering of ferromagnetic (FM) Nb1-yFe2+y revealed that chemical composition (y) tuning leads to a FM quantum-critical point masked by an emerging spin-density wave (SDW). Samples with y=+0.02 appear to show critical scattering across the substantial temperature range where the SDW is stable. Unusually, critical scattering has been observed along an extended line in reciprocal space. We propose to check, whether these previous results obtained by time-of-flight and triple-axis spectrometer measurements can be confirmed using neutron spin-echo spectroscopy with its ultra-high energy resolution. The results would form an important test for, e.g., order-by-disorder models that predict the emergence of modulated order at the border of ferromagnetism. We apply for 4 days of beamtime at WASP.
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The recommended format for citing this dataset in a research publication is in the following format:
NIKLOWITZ Philipp; FOUQUET Peter; GROSCHE Malte; PFLEIDERER Christian and Thomas poulis. (2023). Ultra-low energy excitations in spin-density-wave masked ferromagnetic Nb1-yFe2+y. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-03-1768
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