Method and apparatus for generating giant spin-dependent chemical potential difference in non-magnetic materials

Abstract

A system, structure, and method of making the structure are disclosed for generating a large chemical potential difference between spin-up and spin-down electrons in non-magnetic materials. The device includes an inverse spin valve of a sandwiched layer structure with alternating non-magnetic and magnetic layers. In an embodiment of the invention, the structure is a tri-layer device with a magnetic layer sandwiched by two non-magnetic metals. Once the inverse spin valve structure is provided, an external electric field is applied to the inverse spin valve to generate a large chemical potential difference between the spin-up and spin-down electrons. In an embodiment of the invention, this feature is exploited to create a tunable light emitting diode or laser. In an embodiment of the invention, a dynamical magnetism is induced and controlled in the valve by an electric field. The dynamical magnetization may be used as spin source, or in electronic storage devices.

Dependencies are inferred from the claim text.