ИНДУЦИРОВАННЫЕ ФЛУКТУАЦИЯМИ ФАЗОВЫЕ ПЕРЕХОДЫ И СКИРМИОНЫ В СИЛЬНО КОРРЕЛИРОВАННЫХ FE1-XCOXSI С НАРУШЕННОЙ КРИСТАЛЛИЧЕСКОЙ СТРУКТУРОЙ ТИПА В20

Resultado de la investigación: Articlerevisión exhaustiva

Resumen

Concentration and temperature transitions in strongly correlated Fe1-хCoxSi alloys with the Dzyaloshinsky-Moriyya (DM) interaction are considered within the framework of the spin-fluctuation theory and taking into account the results of LDA+U+SO calculations of the density of electronic states. It is shown that order-order concentration transitions with a change in the sign of the left-handed spin chirality (at x <0.2) to right-handed (at 0.2≤x<0.65), and again to left-handed, are associated with a change in the sign of the intermode interaction parameter. At the same time, it was indicated that in the region of compositions Fe1-хCoxSi 0.2≤x<0.65, temperature-prolonged first-order phase transitions appear, accompanied by the appearance of an intermediate temperature region of spin short-range order with uncompensated local magnetization and DM interaction. In an external magnetic field in this temperature range at 0.21-хCoxSi agree with the experiment.
Título traducido de la contribuciónFLUCTUATION-INDUCED PHASE TRANSITIONS AND SKYRMIONS IN STRONGLY CORRELATED FE1-XCOXSI WITH A BROKEN CRYSTAL STRUCTURE OF THE B20 TYPE
Idioma originalRussian
Páginas (desde-hasta)315-323
Número de páginas9
PublicaciónФизика твердого тела
Volumen63
N.º3
DOI
EstadoPublished - 2021

GRNTI

  • 29.00.00 PHYSICS

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