Periodic magnetic structures generated by spin–polarized currents in nanostripes

Journal Article · Mon Nov 25 00:00:00 EST 2013 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4831748· OSTI ID:22253956

Sheka, Denis D. ^[1]; Kravchuk, Volodymyr P.; Gaididei, Yuri ^[2]; Mertens, Franz G. ^[3]

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1. Taras Shevchenko National University of Kiev, 01601 Kiev (Ukraine)
2. Bogolyubov Institute for Theoretical Physics, 03680 Kiev (Ukraine)
3. Physics Institute, University of Bayreuth, 95440 Bayreuth (Germany)

The influence of a transverse spin–polarized current on long ferromagnetic nanostripes is studied numerically. The magnetization behavior is analyzed for all range of the applied currents, up to the saturation. It is shown that the saturation current is a nonmonotonic function of the stripe width. A number of stable periodic magnetization structures are observed below the saturation. Type of the periodical structure depends on the stripe width. Besides the one–dimensional domain structure, typical for narrow wires, and the two–dimensional vortex–antivortex lattice, typical for wide films, a number of intermediate structures are observed, e.g., cross–tie and diamond state.

• OSTI ID: 22253956
• Journal Information: Applied Physics Letters, Vol. 103, Issue 22; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CURRENTS
DIAMONDS
DOMAIN STRUCTURE
MAGNETIZATION
PERIODICITY
SATURATION