SHIFTABLE MAGNETIC SHIFT REGISTER AND METHOD OF USING THE SAME
First Claim
1. A shift register, comprising:
- a track made of magnetic material and comprised of;
a storage region that contains a plurality of magnetic domains for storing data; and
a reservoir region that is contiguous to the storage region;
wherein an electric current is applied to the track to shift at least some of the magnetic domains of the storage region, along the track, in a direction of the electric current, in and out of the reservoir region, in order to shift at least some of the stored data from the storage region to the reservoir region.
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Accused Products
Abstract
A magnetic shift register uses the inherent, natural properties of domain walls in magnetic materials to store data. The shift register uses spin electronics without changing the physical nature of its constituent materials. The shift register comprises a fine track or strip of magnetic materials. Information is stored as domain walls in the track. An electric current is applied to the track to move the magnetic moments along the track past a reading or writing device. In a magnetic material with domain walls, a current passed across the domain wall moves the domain wall in the direction of the current flow. As the current passes through a domain, it becomes “spin polarized”. When this spin polarized current passes through the next domain and across a domain wall, it develops a circle of spin torque. This spin torque moves the domain wall.
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Citations
70 Claims
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1. A shift register, comprising:
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a track made of magnetic material and comprised of;
a storage region that contains a plurality of magnetic domains for storing data; and
a reservoir region that is contiguous to the storage region;
wherein an electric current is applied to the track to shift at least some of the magnetic domains of the storage region, along the track, in a direction of the electric current, in and out of the reservoir region, in order to shift at least some of the stored data from the storage region to the reservoir region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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41. A shift register, comprising
a magnetic storage means for storing data comprised of: -
a storage region that contains a plurality of magnetic domains for storing the data; and
a reservoir region that is contiguous to the storage region; and
means for selectively shifting at least some of the magnetic domains of the storage region in and out of the reservoir region, alone the track, in a direction of an electric current that is applied to the track. - View Dependent Claims (42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60)
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61. A method of shifting data in a register, comprising:
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the register is made of magnetic material, and comprises;
a storage region that contains a plurality of magnetic domains for storing the data; and
a reservoir region that is contiguous to the storage region; and
selectively shifting at least some of the magnetic domains of the storage region in and out of the reservoir region, along the track, in a direction of an electric current that is applied to the track. - View Dependent Claims (62, 63, 64, 65, 66, 67, 68, 69, 70)
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Specification