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Magnetic spin based memory with semiconductor selector
   
Document Number
US Patent 7068535
Issued Date
June 27, 2006
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Abstract
A new nonvolatile hybrid memory cell is provided. The cell is comprised of a magnetic spin storage element and one or two semiconductor FET isolation elements. The magnetic spin storage element is an electron spin-based memory element situated on a silicon based substrate and includes a first ferromagnetic layer with a changeable magnetization state, and a second ferromagnetic layer with a non-changeable magnetization state. A current of spin polarized electrons has a magnitude which can be varied so that a data value can be stored in the memory element by varying a relative orientation of the two ferromagnetic layers.
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Number of Claims:
27
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Published
June 27, 2006
Application Number
10/962,254
Filed
October 8, 2004
US Classification
365/170   365/158 365/171
Int'l Classification
G11C   11/18   (20060101)  
Examiner
Attorney/Law Firm
Parent Case
RELATED APPLICATION DATA The present invention claims priority to and is a continuation of application Ser. No. 10/776,987 filed Feb. 10, 2004 entitled "Hybrid Semiconductor--Magnetic Spin Based Memory," now U.S. Pat. No. 6,804,146 which in turn is a continuation of application Ser. No. 10/100,210 filed Mar. 18, 2002 entitled "Magnetoelectronic Memory Element With Inductively Coupled Write Wires," now U.S. Pat. No. 6,741,494. application Ser. No. 10/100,210 is a continuation of an application Ser. No. 09/532,706 filed Mar. 22, 2000 titled "Magnetoelectronic Memory Element With Isolation Element" (now U.S. Pat. No. 6,388,916). The latter application Ser. No. 09/532,760 is in turn a divisional application of Ser. No. 08/806,028 filed Feb. 24, 1997 entitled "Hybrid Hall Effect Memory Device & Method of Operation," now U.S. Pat. No. 6,064,083. Ser. No. 08/806,028 is a continuation-in-part of Ser. No. 08/643,805, filed May 6, 1996 titled "Hybrid Hall Effect Device and Method of Operation," (now U.S. Pat. No. 5,652,445), which in turn is a continuation-in-part of an application Ser. No. 08/493,815, filed Jun. 22, 1995 titled "Magnetic Spin Transistor Hybrid Circuit Element," (now U.S. Pat. No. 5,565,695); and said Ser. No. 08/806,028 is also a continuation-in-part of an application Ser. No. 08/425,884, filed Apr. 21, 1995 titled "Magnetic Spin Transistor. Logic Gate & Method of Operation," (now U.S. Pat. No. 5,629,549); and an application Ser. No. 08/643,804 filed May 6, 1996 titled "Magnetic Spin Injected Field Effect Transistor and Method of Operation," (now U.S. Pat. No. 5,654,566).
USPTO Field of Search
365/170   365/171   365/173   365/158   365/145  
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