Searching for charge density waves in chromium

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Abstract
Searching for a charge density wave (CDW) in pure chromium, the satellite reflection intensity mainly due to a periodic lattice distortion (or strain wave, SW) was carefully studied at 150 K by means of X-ray diffraction. The intensity ratio of satellite peaks around the main Bragg peak does not fit the simple SW model. The discrepancy is resolved by consideration of the coexistence of the SW and CDW having an amplitude of 0.003-0.02 electrons/atom. The phase relation between the SW and CDW is also determined. The charge density distribution of the CDW seems to have greater extent in real space than that of the total electrons.