Электронное фазовое расслоение в магнитных материалах

Физика металлов и металловедение. 2022. Т. 123. № 7. С. 716–752.

Kugel K., Рахманов А. Л., Сбойчаков А. О.

A review of the basic concepts and mechanisms related to the electronic phase separation and the
formation of nanoscale inhomogeneities in magnetic materials is given. We put the main emphasis onto
strongly correlated electron systems such as manganites, where phase separation occurs due to the competition
of ferro- and antiferromagnetic states, as well as cobaltites, where the spin-state transitions play an
important role. Special attention is paid to the mechanism of phase separation related to the imperfect nesting
of sheets of the Fermi surface, which is especially important for systems with spin density waves, a striking
example of which are iron-containing pnictides.

Keywords: manganites, манганиты, nesting of the Fermi surface, strongly correlated electron systems, electronic phase separation, электронное фазовое расслоение, lanthanide cobaltites, iron-containing pnictides, системы с сильными электронными корреляциями, нестинг листов поверхности Ферми, кобальтиты, железосодержащие пниктиды