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Magnetization proce...
Magnetization process of spin ice in a [111] magnetic field
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- Isakov, S V (author)
- Stockholms universitet,Fysikum
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- Raman, K S (author)
- Department of Physics, Princeton University, Princeton
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- Moessner, R (author)
- Laboratoire de Physique Théorique de l’Ecole Normale Supérieure, CNRS-UMR8549
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- Sondhi, S L (author)
- Department of Physics, Princeton University, Princeton
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(creator_code:org_t)
- American Physical Society, 2004
- 2004
- English.
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In: Physical Review B. - : American Physical Society. - 1550-235X. ; 70:10, s. 104418-
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Spin ice in a magnetic field in the [111] direction displays two magnetization plateaus: one at saturation and an intermediate one with finite entropy. We study the crossovers between the different regimes from a point of view of (entropically) interacting defects. We develop an analytical theory for the nearest-neighbor spin ice model, which covers most of the magnetization curve. We find that the entropy is nonmonotonic, exhibiting a giant spike between the two plateaus. This regime is described by a monomer-dimer model with tunable fugacities. At low fields, we develop an RG treatment for the extended string defects, and we compare our results to extensive Monte Carlo simulations. We address the implications of our results for cooling by adiabatic (de)magnetization.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Physics
- Fysik
- materiefysik
- Physics Of Matter
Publication and Content Type
- ref (subject category)
- art (subject category)
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