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 (US) |
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Pages (from-to) | 49-53 |
Number of pages | 5 |
Journal | Applied Physics A: Materials Science and Processing |
Volume | 73 |
Issue number | 1 |
DOIs | |
State | Published - Jan 1 2001 |
Externally published | Yes |
ASJC Scopus subject areas
- General Chemistry
- General Materials Science