Precursor phenomena at the magnetic ordering of the cubic helimagnet FeGe
Abstract
We report on detailed magnetic measurements on the cubic helimagnet FeGe in external magnetic fields and temperatures near the onset of long-range magnetic order at TC= 278.2(3) K. Precursor phenomena display a complex succession of temperature-driven crossovers and phase transitions in the vicinity of TC. The A-phase region, present below TC and fields H<0.5 kOe, is split in several pockets. Relying on a modified phenomenological theory for chiral magnets, the main part of the A-phase could indicate the existence of a +π Skyrmion lattice, the adjacent A2 pocket, however, appears to be related to helicoids propagating in directions perpendicular to the applied field.
Turn this paper into a lesson
ArcXiv compiles a structured reading guide from this paper's metadata: plain-English importance, contributions, prerequisite concepts, which sections to read first, flashcards, and a quiz. Grounded in the abstract, never invented.