Spin injection devices

Details Spin injection devices Spin injection devices

2007-01-16

2007-01-16

Toledo, Fernando L. (Department: 2823)

Active solid-state devices (e.g., transistors, solid-state diode

Responsive to non-electrical signal

Magnetic field

C257S425000, C438S003000

Reexamination Certificate

active

10631999

ABSTRACT:
Devices such as transistors, amplifiers, frequency multipliers, and square-law detectors use injection of spin-polarized electrons from one magnetic region, into another through a control region and spin precession of injected electrons in a magnetic field induced by current in a nanowire. In one configuration, the nanowire is also one of the magnetic regions and the control region is a semiconductor region between the magnetic nanowire and the other magnetic region. Alternatively, the nanowire is insulated from the control region and the two separate magnetic regions. The relative magnetizations of the magnetic regions can be selected to achieve desired device properties. A first voltage applied between one magnetic region and the other magnetic nanowire or region causes injection of spin-polarized electrons through the control region, and a second voltage applied between the ends of the nanowire causes a current and a magnetic field that rotates electron spins to control device conductivity.

REFERENCES:
patent: 5565695 (1996-10-01), Johnson
patent: 5629549 (1997-05-01), Johnson
patent: 5966012 (1999-10-01), Parkin
patent: 6624490 (2003-09-01), Flatte et al.
patent: 6774446 (2004-08-01), Osipov et al.
patent: 6809388 (2004-10-01), Ossipov et al.
patent: 6878979 (2005-04-01), Matsukawa et al.
patent: 6879013 (2005-04-01), Osipov et al.
patent: 6888208 (2005-05-01), Osipov et al.
patent: 2005/0023519 (2005-02-01), Osipov et al.
patent: 19746138 (1999-04-01), None
patent: 10019697 (2001-11-01), None
Sarma, Sankar Das, “Spintronics” American Scientist, vol. 89, pp. 516-523 (Nov.-Dec. 2001).
Wolf, S.A. et al., “Spintronics: A Spin-Based Electronics Vision for the Future” Science, vol. 294, pp. 1488-1495 (Nov. 16, 2001).
V V Osipov et al—“A Class of Spin Injection-Precession Ultrafast Nanodevices”—Applied Physics Letter—vol. 84 No. 12—Mar. 22, 2004—pp. 2118-2120.
Supriyo Datta et al—“Electric Analog of the Electro-Optic Modulator”—Applied Physics Letters—vol. 56 No. 7—Feb. 12, 1990—pp. 665-667.

Affiliated with

Also associated with

Rating

Spin injection devices does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Spin injection devices, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spin injection devices will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3770598