Patent ID: 6355953
Filing Date: 2002-03-12
Classification: H01L

Abstract:
A spintronic device comprising:a) a ferromagnetic material having Fermi surfaces for electrons in first and second spin states and a crystal structure; b) a semiconductor material having a Fermi surface and a crystal structure; c) an interface at which the ferromagnetic material and the semiconductor material are in atomic registration; wherein the crystal structures of the ferromagnetic material and the semiconductor material are oriented so that, for electrons in the first spin state, the Fermi surface for electrons in the first spin state in the ferromagnetic material is not connected to the Fermi surface of the semiconductor material by any sum of:d) projections onto the interface of reciprocal lattice vectors of the ferromagnetic material; e) projections onto the interface of reciprocal lattice vectors of the semiconductor material; and, f) reciprocal lattice vectors associated with the group of symmetry translations in the interface of a system comprising the semiconductor material and the ferromagnetic material.