Disordered skyrmion phase stabilized by magnetic frustration in a chiral magnet.

ABSTRACT: Magnetic skyrmions are vortex-like topological spin textures often observed to form a triangular-lattice skyrmion crystal in structurally chiral magnets with the Dzyaloshinskii-Moriya interaction. Recently, β-Mn structure-type Co-Zn-Mn alloys were identified as a new class of chiral magnet to host such skyrmion crystal phases, while β-Mn itself is known as hosting an elemental geometrically frustrated spin liquid. We report the intermediate composition system Co₇Zn₇Mn₆ to be a unique host of two disconnected, thermal-equilibrium topological skyrmion phases; one is a conventional skyrmion crystal phase stabilized by thermal fluctuations and restricted to exist just below the magnetic transition temperature T_c, and the other is a novel three

SUBMITTER: Karube K 

PROVIDER: S-EPMC6140611 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature