Исследование квантовых флуктуаций в FexMn1-xSi с учетом LDA+U+SO расчетов электронной структуры

Abstract

The object of present investigation are quantum spin fluctuations in chiral hel-icoidal ferromagnet FexMn1-xSi based on the calculations of the electronic structure. The sup-pression of local magnetization by quantum spin fluctuations leads to a concentration-tem-perature magnetic transition with the disappearance of the helicoidal short-range order. The results of calculations of local magnetization show that at 0.12<x<0.2 the magnetic state is characterized by the near helicoidal order.