Charge freezing and surface anisotropy on magnetite (100)
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Charge freezing and surface anisotropy on magnetite (100)
Scanning tunneling microscope images of the (100) surface. of slightly nonstoichiometric -magnetite taken at room temperature show static arrays of pairs of Fe” ions with short-range order, and a charge fluctuation time greater than lo3 s. The surface appears to be a Wigner glass with electron pairs localized on adjacent ions as the basic unit. The explanation of Wigner localization at room tem...
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ژورنال
عنوان ژورنال: Journal of Applied Physics
سال: 1993
ISSN: 0021-8979,1089-7550
DOI: 10.1063/1.352522