Elastic electron scattering in quantum corrals: The importance of the shape of the adatom potential

Abstract

We report elastic scattering theory for surface electron waves in quantum corrals defined by adatoms on the surface of noble metals. We develop a scattering-matrix technique that allows us to account for a realistic smooth potential profile of the scattering centers. Our calculations reproduce quantitatively all the experimental observations, which is in contrast to previous theories (treating the adatoms as point scatterers) that require additional inelastic channels of scattering into the bulk in order to achieve the agreement with the experiment. Our findings thus indicate that surface states are not coupled to the bulk electrons.

arXiv comment4 pages, 4 figures

References in corpus (7)

• Coherent Branched Flow in a Two-Dimensional Electron Gas
• Theory of Quantum Corrals and Quantum Mirages
• Scanning tunnelling spectroscopy of electron resonators
• Effects of boundary roughness on a Q-factor of whispering-gallery-mode lasing microdisk cavities
• One- and many-body effects on mirages in quantum corrals
• Scattering matrix approach to the resonant states and Q-values of microdisk lasing cavities
• Compressible $\nu =\frac{1}{2}$ state in a finite size study?

Cited by in corpus (2)

• Engineering interfacial quantum states and electronic landscapes by molecular nanoarchitectures
• Single-Atom Gating of Quantum State Superpositions