Enhanced atomic-scale contrast on Fe3O4(100) observed with an FeSTM tip

R. Koltun; M. Herrmann; G. Guntherodt; V.A.M. Brabers

doi:10.1007/s003390100739

Enhanced atomic-scale contrast on Fe3O4(100) observed with an FeSTM tip

R. Koltun, M. Herrmann, G. Guntherodt, V.A.M. Brabers

Physics of Nanostructures

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Abstract

Clean (100) surfaces of a synthetic single crystal of magnetite (Fe3O4) have been prepared in situ using current pulses in a scanning tunneling microscope without subsequent annealing. We have observed atomically resolved terraces with rows of Fe2+ and Fe3+ ions of the B-sublattice (octahedrally coordinated lattice sites). Along these rows a long-distance corrugation (~12 Å) has been observed at 300 K using in situ prepared Fe tunneling tips. This corrugation is interpreted as a Wigner localization associated with a Verwey transition above 300 K in the top surface layer.

Original language	English
Pages (from-to)	49-53
Journal	Applied Physics A: Materials Science & Processing
Volume	73
Issue number	1
DOIs	https://doi.org/10.1007/s003390100739
Publication status	Published - 2001

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abstract = "Clean (100) surfaces of a synthetic single crystal of magnetite (Fe3O4) have been prepared in situ using current pulses in a scanning tunneling microscope without subsequent annealing. We have observed atomically resolved terraces with rows of Fe2+ and Fe3+ ions of the B-sublattice (octahedrally coordinated lattice sites). Along these rows a long-distance corrugation (~12 {\AA}) has been observed at 300 K using in situ prepared Fe tunneling tips. This corrugation is interpreted as a Wigner localization associated with a Verwey transition above 300 K in the top surface layer.",

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PY - 2001

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N2 - Clean (100) surfaces of a synthetic single crystal of magnetite (Fe3O4) have been prepared in situ using current pulses in a scanning tunneling microscope without subsequent annealing. We have observed atomically resolved terraces with rows of Fe2+ and Fe3+ ions of the B-sublattice (octahedrally coordinated lattice sites). Along these rows a long-distance corrugation (~12 Å) has been observed at 300 K using in situ prepared Fe tunneling tips. This corrugation is interpreted as a Wigner localization associated with a Verwey transition above 300 K in the top surface layer.

AB - Clean (100) surfaces of a synthetic single crystal of magnetite (Fe3O4) have been prepared in situ using current pulses in a scanning tunneling microscope without subsequent annealing. We have observed atomically resolved terraces with rows of Fe2+ and Fe3+ ions of the B-sublattice (octahedrally coordinated lattice sites). Along these rows a long-distance corrugation (~12 Å) has been observed at 300 K using in situ prepared Fe tunneling tips. This corrugation is interpreted as a Wigner localization associated with a Verwey transition above 300 K in the top surface layer.

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DO - 10.1007/s003390100739

M3 - Article

SN - 0947-8396

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JO - Applied Physics A: Materials Science & Processing

JF - Applied Physics A: Materials Science & Processing

IS - 1

ER -

Enhanced atomic-scale contrast on Fe3O4(100) observed with an FeSTM tip

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