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A new look on the two-dimensional Ising model : thermal artificial spins
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- Arnalds, Unnar B. (author)
- Univ Iceland, Inst Sci, Dunhaga 3, IS-107 Reykjavik, Iceland.
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- Chico, Jonathan (author)
- Uppsala universitet,Materialteori
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- Stopfel, Henry (author)
- Uppsala universitet,Materialfysik,Uppsala Univ, Dept Phys & Astron, SE-75120 Uppsala, Sweden.
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- Univ Iceland, Inst Sci, Dunhaga 3, IS-107 Reykjavik, Iceland Materialteori (creator_code:org_t)
- 2016-01-29
- 2016
- English.
- In: New Journal of Physics. - : IOP Publishing. - 1367-2630. ; 18
- Journal article (peer-reviewed)
Abstract
Subject headings
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- We present a direct experimental investigation of the thermal ordering in an artificial analogue of an asymmetric two-dimensional Ising system composed of a rectangular array of nano-fabricated magnetostatically interacting islands. During fabrication and below a critical thickness of the magnetic material the islands are thermally fluctuating and thus the system is able to explore its phase space. Above the critical thickness the islands freeze-in resulting in an arrested thermalized state for the array. Determining the magnetic state we demonstrate a genuine artificial two-dimensional Ising system which can be analyzed in the context of nearest neighbor interactions.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- magnetic ordering
- artificial spins
- Ising model
Publication and Content Type
- ref (subject category)
- art (subject category)
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