Searching for superconductivity-feedback effect in the FM and AFM spin excitation channels of YFe2Ge2 single crystals
Ferromagnetic and antiferromagnetic spin fluctuations tend to mediate superconducting pairing with different symmetry. Elucidating the spin fluctuations in unconventional superconductors are thus crucial for understanding the pairing mechanism. In contrast to the widely-studied AFM fluctuations, FM fluctuations are largely unexplored due to the limited candidate compounds. Our recent inelastic neutron scattering measurements revealed the coexistence of in-plane FM and stripe-type AFM spin fluctuations in a newly-discovered iron germanium superconductor YFe2Ge2. The single crystals are further fabricated to be bulk superconducting, thus providing great opportunity to study the superconductivity feedback effect on both spin excitation channels in this compound, among which the spin resonance mode would be a prototype. Our results will shed new light on the interplay between superconductivity and ferromagnetic fluctuations together with antiferromagnetic fluctuations.
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The recommended format for citing this dataset in a research publication is in the following format:
ZHAO Jun; LIU Feiyang; J. T. Park; STEFFENS Paul; H. C. Walker; WO Hongliang and ZHANG Hao. (2023). Searching for superconductivity-feedback effect in the FM and AFM spin excitation channels of YFe2Ge2 single crystals. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-02-615
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This data is not yet public
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