Chiral paramagnetic skyrmion-like phase in MnSi.

Helmholtz Zentrum Berlin für Materialien und Energie, Glienickerstrasse 100, 14109 Berlin, Germany.
Physical Review Letters (Impact Factor: 7.73). 06/2009; 102(19):197202. DOI: 10.1103/PhysRevLett.102.197202
Source: PubMed

ABSTRACT We present a comprehensive study of chiral fluctuations in the reference helimagnet MnSi by polarized neutron scattering and neutron spin echo spectroscopy, which reveals the existence of a completely left-handed and dynamically disordered phase. This phase may be identified as a spontaneous Skyrmion phase: it appears in a limited temperature range just above the helical transition T_{C} and coexists with the helical phase at T_{C}.

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Eddy Lelièvre-Berna