Non-majority MQCA magnetic logic gates and arrays based on misaligned magnetic islands

Patent

Description

A non-majority magnetic logic gate device for use in constructing compact and power efficient logical magnetic arrays is presented. The non-majority magnetic logic gate device includes a substrate, symmetrically aligned magnetic islands (SAMIs), at least one misaligned magnetic island (MAMI), magnetic field inputs (MFIs), and at least one magnetic field output (MFO). The SAMIs and MAMI are electrically isolated from each other but are magnetically coupled to one another through their respective magnetic fringe fields. The MAMI is geometrically and/or angularly configured to exhibit a magnetization ground state bias which is dependent upon which direction the applied magnetic clock field is swept. Non-majority logic gates can be made from layouts containing the SAMIs and the MAMI which contain a smaller number of components as comparable majority logic gate layouts.

Attributes

Attribute NameValues
Title
  • Non-majority MQCA magnetic logic gates and arrays based on misaligned magnetic islands

Patent Number
  • US 8058906 B2

USPTO Link
Inventor
  • Michael Niemier

  • Mohammad T. Alam

  • Gary H. Bernstein

  • Xiaobo Sharon Hu

  • Wolfgang Porod

Inventor From Local Institution
  • Michael Niemier

  • Gary H. Bernstein

  • Xiaobo Sharon Hu

  • Wolfgang Porod

Other Application
  • 12/816,777

Prior Publication Date
  • 2010-12-16

Prior Publication Number
  • US 20100315123 A1

Claims
  • 33

Classification (US Patent)
  • 326/104; 326/52; 977/859; 977/940;

Cooperative Patent Classification codes
  • B82Y 10/00 (20130101); B82Y 25/00 (20130101); G11C 11/14 (20130101); H01L 27/22 (20130101); G11C 19/0808 (20130101)

International Patent Classification codes
  • H03K 19/20 (20060101); G06F 7/50 (20060101); H03K 19/21 (20060101)

Language
  • eng

Date Issued
  • 2011-11-15

Publisher
  • United States Patent and Trademark Office

Assignee
  • University of Notre Dame Du Lac

Record Visibility Public
Content License
Departments and Units
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