Work

Unusual Hall Effect Anomaly in MnSi under Pressure

Year: 2009

Type: article

Abstract: 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.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.102.186601

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

Institutions: Princeton University, University of Chicago, The University of Tokyo, Japan Science and Technology Agency

Language: English

Topic: Advanced Condensed Matter Physics

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: National Science Foundation, National Institute of Standards and Technology, Materials Research Science and Engineering Center, Harvard University, Division of Materials Research

Award: Princeton Center for Complex Materials