# Direct observation of localization of the minority-spin-band electrons in magnetite below the Verwey temperature

Originally posted at http://arxiv.org/abs/0908.3685v1. Preprint of an article published in Physical Review B, v.80 no.10, 2009.

#### Abstract

Two-dimensional spin-uncompensated momentum density distributions, $\rho_{\rm s}^{2D}({\bf p})$s, were reconstructed in magnetite at 12K and 300K from several measured directional magnetic Compton profiles. Mechanical de-twinning was used to overcome severe twinning in the single crystal sample below the Verwey transition. The reconstructed $\rho_{\rm s}^{2D}({\bf p})$ in the first Brillouin zone changes from being negative at 300 K to positive at 12 K. This result provides the first clear evidence that electrons with low momenta in the minority spin bands in magnetite are localized below the Verwey transition temperature.

#### Suggested Citation

Hisao Kobayashi, Toshihiro Nagao, Masayoshi Itou, Sakae Todo, Bernardo Barbiellini, Peter E. Mijnarends, Arun Bansil, and Nobuhiko Sakai. "Direct observation of localization of the minority-spin-band electrons in magnetite below the Verwey temperature" 2009
Available at: http://works.bepress.com/bbarbiellini/6

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