Scanning tunneling microscopy using CO-terminated probes with tilted and straight geometries
arXiv:2406.12601 · doi:10.1103/PhysRevB.110.125422
Abstract
Scanning tunneling microscopy using a CO-functionalized tip is combined with simulations to explore the impact of the CO tilt angle on topographies of a single Cu atom and CO molecule adsorbed on Cu(111). Images of the Cu atom acquired with varying tip tilt angles and sample voltages are reproduced by the calculations. The agreement between measured and simulated data allows to unveil the tip-orbital composition of the tunneling current, which highlights the role of the different p-orbitals of the CO tip. Microscope data of adsorbed CO and their dependence on voltage and probe-surface distance are captured for the nontilted junction geometry and in the limit of weak tip-surface interaction assuming sufficiently large tip-sample separations.
13 pages, 12 figures, accepted for publication in Physical Review B
References in corpus (19)
- The mechanism of high-resolution STM/AFM imaging with functionalized tips
- Atom Transfer and Single-Adatom Contacts
- Imaging Pauli repulsion in scanning tunneling microscopy
- Intermolecular contrast in atomic force microscopy images without intermolecular bonds
- Atomic-scale spin sensing with a single-molecule at the apex of a scanning tunneling microscope
- Direct assessment of the proton affinity of individual surface hydroxyls with non-contact atomic force microscopy
- Atomic-scale spin-polarization maps using functionalized superconducting probes
- Circumventing the Stability Problems of Graphene Nanoribbon Zigzag Edges
- Submolecular resolution by variation of IETS amplitude and its relation to AFM/STM signal
- Chen's derivative rule revisited: Role of tip-orbital interference in STM
- Simulation of inelastic electron tunneling spectroscopy of single molecules with functionalized tips
- Quantized Conductance of a Single Magnetic Atom
- Influence of atomic tip structure on the intensity of inelastic tunneling spectroscopy data analyzed by combined scanning tunneling spectroscopy, force microscopy and density functional theory
- Analysis of STM images with pure and CO-functionalized tips: A first-principles and experimental study
- Scanning tunneling microscopy current from localized basis orbital density functional theory
- What is the orientation of the tip in a scanning tunneling microscope?
- Atomic Force Extrema Induced by the Bending of a CO-Functionalized Probe
- Arbitrary tip orientation in STM simulations: 3D WKB theory and application to W(110)
- Contrast stability and "stripe" formation in Scanning Tunnelling Microscopy imaging of highly oriented pyrolytic graphite: The role of STM-tip orientations