000076014 001__ 76014 000076014 005__ 20200117212656.0 000076014 0247_ $$2doi$$a10.1103/PhysRevB.98.144445 000076014 0248_ $$2sideral$$a108927 000076014 037__ $$aART-2018-108927 000076014 041__ $$aeng 000076014 100__ $$0(orcid)0000-0002-8173-1846$$aLaliena, V. 000076014 245__ $$aThermal fluctuations in the conical state of monoaxial helimagnets 000076014 260__ $$c2018 000076014 5060_ $$aAccess copy available to the general public$$fUnrestricted 000076014 5203_ $$aThe effect of thermal fluctuations on the phase structure of monoaxial helimagnets with external magnetic field parallel to the chiral axis is analyzed by means of a saddle point expansion of the free energy. The phase transition that separates the conical and forced ferromagnetic phases is changed to first order by the thermal fluctuations. In a purely monoaxial system the pitch of the conical state remains independent of temperature and magnetic field, as in mean-field theory, even when fluctuations are taken into account. However, in the presence of weak Dzyaloshinskii-Moriya interactions in the plane perpendicular to the chiral axis, thermal fluctuations induce a dependence of the pitch on temperature and magnetic field. This may serve to determine the nature of magnetic interactions in such systems. 000076014 536__ $$9info:eu-repo/grantAgreement/ES/MINECO/MAT2015-68200-C2-2-P 000076014 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc$$uhttp://creativecommons.org/licenses/by-nc/3.0/es/ 000076014 592__ $$a1.502$$b2018 000076014 593__ $$aElectronic, Optical and Magnetic Materials$$c2018$$dQ1 000076014 593__ $$aCondensed Matter Physics$$c2018$$dQ1 000076014 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000076014 700__ $$aKato, Y. 000076014 700__ $$aAlbalate, G. 000076014 700__ $$0(orcid)0000-0002-3600-1721$$aCampo, J.$$uUniversidad de Zaragoza 000076014 7102_ $$12003$$2395$$aUniversidad de Zaragoza$$bDpto. Física Materia Condensa.$$cÁrea Física Materia Condensada 000076014 773__ $$g98, 14 (2018), 144445 [10 pp]$$pPhys. Rev. B$$tPhysical Review B$$x2469-9950 000076014 8564_ $$s364397$$uhttps://zaguan.unizar.es/record/76014/files/texto_completo.pdf$$yVersión publicada 000076014 8564_ $$s18889$$uhttps://zaguan.unizar.es/record/76014/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000076014 909CO $$ooai:zaguan.unizar.es:76014$$particulos$$pdriver 000076014 951__ $$a2020-01-17-21:23:11 000076014 980__ $$aARTICLE