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http://hdl.handle.net/2445/10572
Title: | Spatially correlated disorder in self-organized precursor magnetic nanostructures |
Author: | Porta Tena, Marcel Castán i Vidal, Maria Teresa Lloveras, Pol Planes Vila, Antoni Saxena, A. (Avadh) |
Keywords: | Propietats magnètiques Sòlids Estructura electrònica Magnetic properties Solids Electronic structure |
Issue Date: | 2007 |
Publisher: | The American Physical Society |
Abstract: | We study the scaling behavior of the characteristic length of precursor magnetic nanostructures above the Curie temperature with the correlation length of quenched-in disorder. We found that the modulation length of the nanostructures follows the scaling law D ¯ , where Dis the average size of the magnetized regions in the material. The scaling behavior of the average size of these regions, D¯ , with the correlation length of the disorder, , depends on the properties of the disorder. For Gaussian disorder, we find that Dscales with the disorder correlation length as D a/2 , where a is the exponent of the leading term of the pair correlation function of the disorder in the limit r → 0, r 1� 1/ ar / a . These results are quite general and applicable to other systems, e.g., ferroelectric precursors, independent of the nature of the long-range dipolar forces. |
Note: | Reproducció digital del document publicat en format paper, proporcionada per http://dx.doi.org/10.1103/PhysRevB.76.054432 |
It is part of: | Physical Review B, 2007, vol. 76, núm. 5, p. 054432-1-054432-7 |
URI: | http://hdl.handle.net/2445/10572 |
Related resource: | http://dx.doi.org/10.1103/PhysRevB.76.054432 |
ISSN: | 0163-1829 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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