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arXiv · 0811.3146

Unusual Hall Effect Anomaly in MnSi Under Pressure

Minhyea Lee·W. Kang·Y. Onose·Y. Tokura·N. P. Ong
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Abstract

We report the observation of a highly unusual Hall current in the MnSi in an applied pressure P = 6-12 kbar. The Hall conductivity displays a distinctive step-wise 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>14.6 kbar. We discuss evidence favoring the chiral spin mechanism for the origin of the observed Hall anomaly.

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Minhyea Lee, W. Kang, Y. Onose, Y. Tokura, N. P. Ong. 2008-11-19. Unusual Hall Effect Anomaly in MnSi Under Pressure. https://doi.org/10.1103/physrevlett.102.186601

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