Theory of a scanning tunneling microscope with a two-protrusion tip.
نویسندگان
چکیده
We consider a scanning tunneling microscope (STM) such that tunneling occurs through two atomically sharp protrusions on its tip. When the two protrusions are separated by at least several atomic spacings, the differential conductance of this STM depends on the electronic transport in the sample between the protrusions. Such two-protrusion tips commonly occur during STM tip preparation. We explore possible applications to probing dynamical impurity potentials on a metallic surface and local transport in an anisotropic superconductor.
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عنوان ژورنال:
- Physical review. B, Condensed matter
دوره 53 16 شماره
صفحات -
تاریخ انتشار 1996