2002•Review of Scientific InstrumentsOpen access

Electrochemical preparation of cobalt tips for scanning tunneling microscopy

Cristiano Albonetti, I. Bergenti, Massimiliano Cavallini, Valentin Dediu, Massimiliano Massi, Jean‐François Moulin, Fabio Biscarini

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Abstract

Here we describe a straightforward electrochemical method for fabricating sharp cobalt tips. Such tips are particularly useful for those scanning tunneling microscopy (STM) experiments where the focus is on magnetic properties of the surface and the spin polarized (SP) tunneling current is the relevant property, such as in SPSTM and SP scanning tunneling spectroscopy.

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Key concepts: Scanning tunneling microscope, Electrochemical scanning tunneling microscope, Spin polarized scanning tunneling microscopy, Scanning tunneling spectroscopy, Cobalt, Materials science, Scanning probe microscopy, Quantum tunnelling