Anomalous Hall effect in L10-MnAl films with controllable orbital two-channel Kondo effect

L. J. Zhu; S. H. Nie; J. H. Zhao

doi:10.1103/PhysRevB.93.195112

Anomalous Hall effect in L10-MnAl films with controllable orbital two-channel Kondo effect

Strongly Correlated Electrons 2016-05-10 v2 Mesoscale and Nanoscale Physics

Authors: L. J. Zhu , S. H. Nie , J. H. Zhao

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Abstract

The anomalous Hall effect (AHE) in strongly disordered magnetic systems has been buried in persistent confusion despite its long history. We report the AHE in perpendicularly magnetized L10-MnAl epitaxial films with variable orbital two-channel Kondo (2CK) effect arising from the strong coupling of conduction electrons and the structural disorders of two-level systems. The AHE is observed to excellently scale with pAH/f=a0pxx0+bpxx2 at high temperatures where phonon scattering prevails. In contrast, significant deviation occurs at low temperatures where the orbital 2CK effect becomes important, suggesting a negative AHE contribution. The deviation of the scaling agrees with the orbital 2CK effect in the breakdown temperatures and deviation magnitudes.

Keywords

anomalous Hall effect L10-MnAl films orbital two-channel Kondo effect disordered magnetic systems scaling relation perpendicular magnetization structural disorder

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@article{arxiv.1601.07943,
  title  = {Anomalous Hall effect in L10-MnAl films with controllable orbital two-channel Kondo effect},
  author = {L. J. Zhu and S. H. Nie and J. H. Zhao},
  journal= {arXiv preprint arXiv:1601.07943},
  year   = {2016}
}

Anomalous Hall effect in L10-MnAl films with controllable orbital two-channel Kondo effect

Abstract

Keywords

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