AI Article Synopsis
- The text discusses the controlled movement of domain walls in magnetic nanowires, which is crucial for developing magnetic racetrack memory, a type of non-volatile storage memory.
- The researchers utilized permalloy nanowires and demonstrated the ability to create, move, and detect domain walls using fast spin-polarized current pulses within nanoseconds.
- Their findings highlight the concept of a magnetic shift register that uses spin-momentum transfer to efficiently manipulate closely spaced domain walls.
Article Abstract
The controlled motion of a series of domain walls along magnetic nanowires using spin-polarized current pulses is the essential ingredient of the proposed magnetic racetrack memory, a new class of potential non-volatile storage-class memories. Using permalloy nanowires, we achieved the successive creation, motion, and detection of domain walls by using sequences of properly timed, nanosecond-long, spin-polarized current pulses. The cycle time for the writing and shifting of the domain walls was a few tens of nanoseconds. Our results illustrate the basic concept of a magnetic shift register that relies on the phenomenon of spin-momentum transfer to move series of closely spaced domain walls.
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| http://dx.doi.org/10.1126/science.1154587 | DOI Listing |
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