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Gaps in the spin wave dispersion relation in elemental iron
Iron is a canonical instance of an itinerant electron ferromagnet, and a classic correlated electron system. Our recent data from MAPS contradicts earlier triple-axis data that... -
Magnetic fluctuations in the possible spin-triplet superconductor LiFeAs
LiFeAs is one of the newly discovered FeAs superconductors with still large T_c of 18K. First inelastic neutron scattering experiments on powder and on single-crystalline...