title: Cleaved thin-film probes for scanning tunneling microscopy.
abstract: We introduce an alternative type of probe for scanning tunneling microscopy (STM). Instead of using a needle-like tip made from a piece of metallic wire, a sharp-edged cleaved insulating substrate, which is initially covered by a thin conductive film, is used. The sharp tip is formed at the intersection of the two cleaved sides. Using this approach a variety of materials for STM probes can be used, and functionalization of STM probes is possible. The working principle of different probes made of metallic (Pt, Co, and CoB), indium-tin oxide, as well as Cu/Pt and Co/Pt multilayer films are demonstrated by STM imaging of clean Cu(001) and Cu(111) surfaces as well as the epitaxial Co clusters on Cu(111).
authors.affiliation: Department of Applied Physics, Eindhoven University of Technology, 5600 MB, The Netherlands.
authors.forename: T
authors.initials: T
authors.lastname: Siahaan
authors.forename: O
authors.initials: O
authors.lastname: Kurnosikov
authors.forename: B
authors.initials: B
authors.lastname: Barcones
authors.forename: H J M
authors.initials: HJ
authors.lastname: Swagten
authors.forename: B
authors.initials: B
authors.lastname: Koopmans