Static information storage and retrieval – Magnetic shift registers – Bidirectional
Reexamination Certificate
2009-09-02
2010-02-23
Le, Vu A (Department: 2824)
Static information storage and retrieval
Magnetic shift registers
Bidirectional
C365S158000, C365S171000, C365S078000, C365S080000, C977S933000
Reexamination Certificate
active
07667994
ABSTRACT:
A method for use with a magnetic racetrack device includes placing domain walls having a first structure and domain walls having a second, different structure along the racetrack at stable positions corresponding to different regions within the device. The domain walls having the first structure and the domain walls having the second structure occupy alternating positions along the racetrack. A current pulse is applied to the racetrack, so that each of the domain walls moves to an adjacent region. This results in a transformation of the domain walls having the first structure into domain walls having the second structure, and vice versa. The first structure may be a vortex structure and the second structure may be a transverse structure.
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Moriya Rai
Parkin Stuart
Thomas Luc
Byrne Harry W
International Business Machines - Corporation
Johnson Daniel E.
Le Vu A
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