ELECTRONIC-STRUCTURE OF SINUSOIDAL SPIN-DENSITY WAVE STATE IN CHROMIUM

The spin density wave in chromium is discussed on the basis of electronic structure calculation. The electronic structure of sinusoidal spin density wave states with finite local magnetic moments is calculated for chromium by means of a tight-binding model Hamiltonian with a minimal basis set, which is obtained through some simplification to the first-principle LMTO method. The wave vector of the sinusoidal spin density wave state of lowest energy is found to be in good agreement with experiments for chromium and its alloys. Not only the amplitude of the fundamental wave of the spin density wave, but also that of the concomitant charge density wave and that of the third harmonic of the spin density wave are discussed.