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Título: | Thermal fluctuations in the conical state of monoaxial helimagnets |
Autor: | Laliena, Victor CSIC ORCID; Kato, Yusuke; Albalate, Germán; Campo, Javier CSIC ORCID | Fecha de publicación: | 2018 | Editor: | American Physical Society | Citación: | Physical Review B 98(14): 144445 (2018) | Resumen: | The effect of thermal fluctuations on the phase structure of monoaxial helimagnets with external magnetic field parallel to the chiral axis is analyzed by means of a saddle point expansion of the free energy. The phase transition that separates the conical and forced ferromagnetic phases is changed to first order by the thermal fluctuations. In a purely monoaxial system the pitch of the conical state remains independent of temperature and magnetic field, as in mean-field theory, even when fluctuations are taken into account. However, in the presence of weak Dzyaloshinskii-Moriya interactions in the plane perpendicular to the chiral axis, thermal fluctuations induce a dependence of the pitch on temperature and magnetic field. This may serve to determine the nature of magnetic interactions in such systems. | Versión del editor: | https://doi.org/10.1103/PhysRevB.98.144445 | URI: | http://hdl.handle.net/10261/181411 | DOI: | 10.1103/PhysRevB.98.144445 | ISSN: | 2469-9950 | E-ISSN: | 2469-9969 |
Aparece en las colecciones: | (ICMA) Artículos |
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thermalhelimag.pdf | 355,86 kB | Adobe PDF | Visualizar/Abrir |
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