TY - JOUR
T1 - Hidden constant in the anomalous Hall effect of high-purity magnet MnSi
AU - Lee, Minhyea
AU - Onose, Y.
AU - Tokura, Y.
AU - Ong, N. P.
PY - 2007/5/7
Y1 - 2007/5/7
N2 - Measurements of the Hall conductivity in MnSi can provide incisive tests of theories of the anomalous Hall (AH) effect, because both the mean free path and magnetoresistance (MR) are unusually large for a ferromagnet. The large MR provides an accurate way to separate the AH conductivity σ xy A from the ordinary Hall conductivity σ xy N. Below the Curie temperature TC, σ xy A is linearly proportional to M (magnetization) with a proportionality constant SH that is independent of both T and H. In particular, SH remains a constant while σ xy N changes by a factor of 100 between 5 K and TC. We discuss implications of the hidden constancy in SH.
AB - Measurements of the Hall conductivity in MnSi can provide incisive tests of theories of the anomalous Hall (AH) effect, because both the mean free path and magnetoresistance (MR) are unusually large for a ferromagnet. The large MR provides an accurate way to separate the AH conductivity σ xy A from the ordinary Hall conductivity σ xy N. Below the Curie temperature TC, σ xy A is linearly proportional to M (magnetization) with a proportionality constant SH that is independent of both T and H. In particular, SH remains a constant while σ xy N changes by a factor of 100 between 5 K and TC. We discuss implications of the hidden constancy in SH.
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U2 - 10.1103/PhysRevB.75.172403
DO - 10.1103/PhysRevB.75.172403
M3 - Article
AN - SCOPUS:34347264861
SN - 1098-0121
VL - 75
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 17
M1 - 172403
ER -