On the Nature of the Magnetic Couplings in Transitional Metals

摘要: This paper suggests a simple model of magnetism for transitional metals which is somewhat intermediate between Heisenberg's atomic and Stoner's band model. Starting with paramagneticd band, described in the tight-binding approximation equal population both spin directions, exchange interactions are introduced. They shown able to produce localized magnetic moments, by attracting locally (traveling) electrons one direction at expense others. A condition obtained such moments appear spontaneously; it be fulfilled many metals. With use general results recently authors others, then that each these if produced alone, should extend over certain region space, surrounded “fringes” polarization an alternating sign. The size central wavelength fringes related average t...