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Magnetism in Mn1-xFexGe Compounds: When the Left and the Right are Fighting, WhoWins?статья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 19 июля 2013 г.
- Авторы: Grigoriev S.V., Potapova N.M., S-A Siegfried, Dyadkin V.A., Moskvin E.V., Dmitriev V., Menzel D., Dewhurst C.D., Chernyshov D., Sadykov R.A., Fomicheva L.N., A V.
- Журнал: Physical Review Letters
- Том: 110
- Номер: 207201
- Год издания: 2013
- Издательство: American Physical Society
- Местоположение издательства: United States
- Первая страница: 207201-1
- Последняя страница: 207201-5
- DOI: 10.1103/PhysRevLett.110.207201
- Аннотация: Magnetic susceptibility measurements have shown that the compounds Mn1-xFexGe are magnetically ordered through the whole range of concentrations x = [0.0, 1.0]. Small-angle neutron scattering reveals the helical nature of the spin structure with a wave vector, which changes from its maximum (|k|= 2,3 nm(-1) for pure MnGe, through its minimum (|k| -0) at xc = 0,75, to the value of |k| = 0,09 nm(-1) for pure FeGe. The macroscopic magnetic measurements confirm the ferromagnetic nature of the compound with x=xc. The observed transformation of the helix structure to the ferromagnet at x=xc is explained by different signs of chirality for the compounds with x > xc and x < xc. We used x-ray diffraction and polarized neutron scattering to evaluate the crystallographic chirality Гc and the magnetic chirality gm of the FeGe single crystals. Similar to previous observations for FeSi-based compounds,FeGe demonstrates left- (right-)handed crystalline chirality acompained by right (left) handedness of the magnetic helix (Гcgm =-1). At variance, MnSi related compounds show the opposite behavior(Гcgm =1). Since the magnetic chirality gm relates to the sign of the Dzyaloshinskii-Moriya interaction(DMI), for the same geometrical arrangement (Гc) the sign of DMI can be set by the proper choice of the transition metal.
- Добавил в систему: Цвященко Анатолий Васильевич