Abstract
The energy-versus-volume curve of the spin-density wave (SDW) inbody-centred-cubic Cr is calculated with the density functionaltheory/full-potential linearized augmented plane wave(DFT/FLAPW) method using the generalized gradient approximation(GGA). The predicted ground state is not the SDW, in contrast toan earlier FLAPW calculation. Aconjecture is formulated that the widely varying results ofthe local density approximation (LDA) and GGA - and of different solutionmethods - can be scaled by the size of the calculated moment. Asa consequence, experimentally relevant properties of the SDW canbe calculated by tuning the moment. The implications of theseresults for the ability of DFT to describe Cr are discussed.
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