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

被引：33

作者：

Koltun, R

Herrmann, M

Güntherodt, G

Brabers, VAM

机构：

[1] Eindhoven Univ Technol, Dept Phys, NL-5600 MB Eindhoven, Netherlands

[2] Rhein Westfal TH Aachen, Inst Phys 2, D-52056 Aachen, Germany

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2001年 / 73卷 / 01期

关键词：

D O I：

10.1007/s003390100739

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 (similar to 12W) has been observed at 300K using in situ prepared Fe tunneling tips. This corrugation is interpreted as a Wigner localization associated with a Verwey transition above 300K in the top surface layer.

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页码：49 / 53

页数：5

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