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New Magnetic Excitations in the Spin-Density-Wave of Chromium

H. Hiraka·P. Boni·Y. Endoh·M. Fujita·K. Yamada·G. Shirane
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Abstract

Low-energy magnetic excitations of chromium have been reinvestigated with a single-Q crystal using neutron scattering technique. In the transverse spin-density-wave phase a new type of well-defined magnetic excitation is found around (0,0,1) with a weak dispersion perpendicular to the wavevector of the incommensurate structure. The magnetic excitation has an energy gap of E ~ 4 meV and at (0,0,1) exactly corresponds to the Fincher mode previously studied only along the incommensurate wavevector.

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H. Hiraka, P. Boni, Y. Endoh, M. Fujita, K. Yamada, G. Shirane. 2002-08-05. New Magnetic Excitations in the Spin-Density-Wave of Chromium. https://doi.org/10.1103/physrevb.67.064423

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