ε-iron nitrides: Intrinsic anomalous Hall ferromagnets | Zendy

Guo-Ke Li | Zendy; Yan Liu | Zendy; Dewei Zhao | Zendy; Ping Song | Zendy; Li Ma | Zendy; Congmian Zhen | Zendy; Hui Liu | Zendy; Denglu Hou | Zendy

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ε-iron nitrides: Intrinsic anomalous Hall ferromagnets

Author(s) -

Guo-Ke Li,

Yan Liu,

Dewei Zhao,

Ping Song,

Li Ma,

Congmian Zhen,

Hui Liu,

Denglu Hou

Publication year - 2015

Publication title -

apl materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.571

H-Index - 60

ISSN - 2166-532X

DOI - 10.1063/1.4913248

Subject(s) - condensed matter physics , hall effect , ferromagnetism , materials science , saturation (graph theory) , nitride , conductivity , magnetization , electrical resistivity and conductivity , nitrogen , magnetic field , physics , chemistry , nanotechnology , mathematics , combinatorics , quantum mechanics , layer (electronics)

The anomalous Hall effect in ε-iron nitrides (ε-Fe3-xN, 0 ≤ x ≤ 1) has been systematically investigated taking advantage of the fact that the exchange splitting of ε-Fe3-xN can be continuously tuned through the nitrogen concentration. It has been found that the anomalous Hall conductivity, σxyAH, is proportional to the saturation magnetization MS, i.e., σxyAH=SHMS, across significant variations in the saturation magnetization (96–1146 emu/cc). This relationship is in excellent agreement with the intrinsic mechanism as well as with the unified theory of AHE. Our results also demonstrate that the anomalous Hall conductivity is sensitive to the exchange splitting of the band structure

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