Possible spin-spiral and (bi)skyrmion lattice phases in Co3Sn2S2
Topologicaly stable particle-like objects, so-called magnetic skyrmions attract much attention due to their remarkable properties that include ultra-low current driven motion, multiferroic coupling and emergent electrodynamics. Recent experiments show that skyrmion like states, such as biskyrmions or frustrated skyrmions can emerge in centrosymmetric compounds where, unlike for the skyrmions in the well-known chiral cubic materials like MnSi, the internal helicity and/or vorticity degree of freedom of the skyrmions can be controlled. Here, we aim to study Co3Sn2S2, which has a centrosymmetric crystal structure composed of Kagomé layers. Analogous with the chiral cubic skyrmion materials, this compound has a magnetic phase that is stable only in the vicinity of the magnetic phase transition, and low-fields induce a transition to the field polarized state. AC susceptibility also indicates that large magnetic structures are rearranged in this phase. The proposed SANS experiments can confirm the presence of modulated magnetic order and helps to resolve the spin texture in this anomalous phase.
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BORDACS Sandor; CUBITT Robert; B. G. Szigeti and WHITE Jonathan. (2018). Possible spin-spiral and (bi)skyrmion lattice phases in Co3Sn2S2. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-42-464
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