Two-step pressure-induced collapse of magnetic order in the MnGe chiral magnet - Université de Lorraine
Journal Articles Physical Review B: Condensed Matter and Materials Physics (1998-2015) Year : 2014

Two-step pressure-induced collapse of magnetic order in the MnGe chiral magnet

Abstract

Cubic helimagnets such as MnSi and FeGe have provided paradigmatic cases of pressure-induced collapse of band ferromagnetism in metals, accompanied with exotic partial order and chiral spin textures. Isostructural MnGe stands out owing to its much shorter helix pitch and high magnetic moment. By combining resistivity, ac susceptibility, and neutron diffraction measurements under very high pressure, we show that the helical order in MnGe transforms around 6 GPa from a high-spin to a low-spin state, recalling the weak ferromagnetism of MnSi at ambient pressure. Helical order collapses only above 10 GPa. The spin-state transition is supported by ab initio calculations.
Fichier principal
Vignette du fichier
Deutsch_2014_PhysRevB.89.180407.pdf (1.41 Mo) Télécharger le fichier
Origin Publisher files allowed on an open archive
Loading...

Dates and versions

hal-01709637 , version 1 (09-03-2018)

Identifiers

Cite

Maxime Deutsch, O.L. Makarova, T.C. Hansen, M.T. Fernandez-Diaz, V.A. Sidorov, et al.. Two-step pressure-induced collapse of magnetic order in the MnGe chiral magnet. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2014, 89 (18), pp.180407. ⟨10.1103/PhysRevB.89.180407⟩. ⟨hal-01709637⟩

Relations

190 View
112 Download

Altmetric

Share

More