Unusual hall effect anomaly in MnSi under pressure

Minhyea Lee, W. Kang, Y. Onose, Y. Tokura, N. P. Ong

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224 Scopus citations

Abstract

We report the observation of a highly unusual Hall current in the helical magnet MnSi in an applied pressure P=6-12kbars. The Hall conductivity displays a distinctive stepwise field profile quite unlike any other Hall response observed in solids. We identify the origin of this Hall current with the effective real-space magnetic field due to chiral spin textures, which may be a precursor of the partial-order state at P>14.6kbar. We discuss evidence favoring the chiral spin mechanism for the origin of the observed Hall anomaly.

Original languageEnglish (US)
Article number186601
JournalPhysical review letters
Volume102
Issue number18
DOIs
StatePublished - May 4 2009

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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