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Evidence for Two-Dimensional Spin-Glass Ordering in Submonolayer Fe Films on Cleaved InAs Surfaces

Mesoscale and Nanoscale Physics 2009-11-13 v3 Disordered Systems and Neural Networks Materials Science
Authors: Toshimitsu Mochizuki , Ryuichi Masutomi , Tohru Okamoto
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Abstract

Magnetotransport measurements have been performed on two-dimensional electron gases formed at InAs(110) surfaces covered with a submonolayer of Fe. Hysteresis in the magnetoresistance, a difference in remanent magnetoresistance between zero-field-cooling procedures and field-cooling procedures, and logarithmic time-dependent relaxation after magnetic field sweep are clearly observed at 1.7 K for a coverage of 0.42 monolayer. These features are associated with spin-glass ordering in the Fe film.

Keywords

spin-glass ordering two-dimensional electron gas Fe films InAs magnetotransport hysteresis relaxation

Cite

@article{arxiv.0810.4425,
  title  = {Evidence for Two-Dimensional Spin-Glass Ordering in Submonolayer Fe Films on Cleaved InAs Surfaces},
  author = {Toshimitsu Mochizuki and Ryuichi Masutomi and Tohru Okamoto},
  journal= {arXiv preprint arXiv:0810.4425},
  year   = {2009}
}

Comments

4 pages, 3 figures

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