Theory of a scanning tunneling microscope with a two-protrusion tip
- 15 April 1996
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 53 (16) , R10536-R10539
- https://doi.org/10.1103/physrevb.53.r10536
Abstract
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.Keywords
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This publication has 18 references indexed in Scilit:
- Probing Spatial Correlations with Nanoscale Two-Contact TunnelingPhysical Review Letters, 1995
- Real Space Imaging of Ballistic Carrier Propagation in Bi Single CrystalsPhysical Review Letters, 1995
- Scattering and absorption of surface electron waves in quantum corralsNature, 1994
- Influence of gap extrema on the tunneling conductance near an impurity in an anisotropic superconductorPhysical Review Letters, 1993
- Spectroscopy of a single adsorbed atomPhysical Review B, 1993
- Imaging standing waves in a two-dimensional electron gasNature, 1993
- In situ Ag/ contacts for superconductor–normal-metal–superconductor devicesPhysical Review B, 1992
- First-principle simulation of scanning tunneling microscopy/spectroscopy with cluster models of W, Pt, TiC, and impurity adsorbed tipsJournal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures, 1991
- Conserving Approximations for Strongly Correlated Electron Systems: Bethe-Salpeter Equation and Dynamics for the Two-Dimensional Hubbard ModelPhysical Review Letters, 1989
- Theory of the scanning tunneling microscopePhysical Review B, 1985