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Detailed ab initio ...
Detailed ab initio calculations of the structure and magnetic state of a metallic spin glass
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- Peil, O. E. (författare)
- Uppsala universitet,Kondenserade materiens teori (Fysik IV)
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- Ruban, Andrei V. (författare)
- KTH,Tillämpad materialfysik
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- Johansson, Börje (författare)
- Uppsala universitet,KTH,Tillämpad materialfysik,Kondenserade materiens teori (Fysik IV)
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(creator_code:org_t)
- 2008-08-19
- 2008
- Engelska.
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Ingår i: New Journal of Physics. - : IOP Publishing. - 1367-2630. ; 10
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- We present for the first time a long-sought atomic and magnetic structure of one of the most well-known and studied spin-glass systems: the Cu83Mn17 alloy, which is the prototype for a large class of metallic spin-glass systems. The structure has been determined from simulations based on atomic and magnetic interactions obtained from first-principles calculations. Being in perfect agreement with recent neutron scattering experiments, our results reveal the atomic and magnetic structure that exhibits a specific short-range order (SRO) and is believed to be responsible for a complicated magnetic cluster dynamics leading to the spin-glass behaviour in this alloy. The ordered phase underlying the atomic SRO is shown to have a Cu3Mn-type structure with 16 atoms per unit cell. The magnetic SRO is associated with incommensurate spin-spiral correlations.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- neutron-polarization-analysis
- density-wave magnetism
- short-range
- order
- cu-mn alloys
- 1st-principles theory
- Physics
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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