The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 04, 2003
Filed:
Oct. 24, 2001
Alexander Efros, Annandale, VA (US);
Mervine Rosen, Clifton, VA (US);
Emmanuel Rashba, Newton, MA (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
This invention pertains to a device and a method for injecting spin polarized monochromatic electrons with a particular magnetic moment at room temperature and in absence of an external magnetic field into a nonmagnetic electrode. The device comprises a ferromagnetic electrode, a nonmagnetic electrode spaced from the ferromagnetic electrode, a nanocrystal doped with a single active paramagnetic ion disposed in the space between the electrodes, and an electrical connection between the electrodes for applying voltage to move the electrons from the ferromagnetic electrode, through the doped nanocrstal and into the nonmagnetic electrode. The method comprising the step of applying voltage between spaced ferromagnetic and nonmagnetic electrodes whereby spin polarized electrons are passed from the ferromagnetic electrode through a doped nanocrystal that is spaced from the ferromagnetic electrode and is in contact with the nonmagnetic electrode, and into the nonmagnetic electrode, the nanocrystal being doped with a single paramagnetic ion.