Domains in the Spin-Density-Wave Phases of Chromium

Lattice-distortion domain walls in the spin-density-wave phases of Cr are thin, have negative free energy, and provide an explanation for the irreversibility of increases of δ in Q=(2πa)(1±δ) with increases in pressure at T50 K, observed in de Haas-van Alphen experiments of Ruesink, Perz, and Templeton. Domain walls of the spin-density wave itself have positive free energies, have thickness {}1000 {}, and cannot be used to explain these experimental results.