Unusual Hall effect anomaly in MnSi under pressure.
نویسندگان
چکیده
We report the observation of a highly unusual Hall current in the helical magnet MnSi in an applied pressure P=6-12 kbars. 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>14.6 kbar. We discuss evidence favoring the chiral spin mechanism for the origin of the observed Hall anomaly.
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ورودعنوان ژورنال:
- Physical review letters
دوره 102 18 شماره
صفحات -
تاریخ انتشار 2009