SciPost Physics

SciPost Phys. 9, 085 (2020) · published 10 December 2020

• doi: 10.21468/SciPostPhys.9.6.085
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Abstract

Quantum corrals can be considered as artificial atoms. By coupling many quantum corrals together, artificial matter can be created at will. The atomic scale precision with which the quantum corrals can be made grants the ability to tune parameters that are difficult to control in real materials, such as the symmetry of the states that couple, the on-site energy of these states, the hopping strength and the magnitude of the orbital overlap. Here, we systematically investigate the accessible parameter space for the dominant platform (CO molecules on Cu(111)) by constructing (coupled) quantum corrals of different sizes and shapes. By changing the configuration of the CO molecules that constitute the barrier between two quantum corrals, the hopping integral can be tuned between 0 and -0.3 eV for s- and p-like states, respectively. Incorporation of orbital overlap is essential to account for the experimental observations. Our results aid the design of future artificial lattices.

• Herrera et al., Corner modes of the breathing kagome lattice: Origin and robustness
  Phys. Rev. B 105, 085411 (2022) [Crossref]
• Freeney et al., Electronic Quantum Materials Simulated with Artificial Model Lattices
  ACS Nanosci. Au 2, 198 (2022) [Crossref]
• Jolie et al., Creating Tunable Quantum Corrals on a Rashba Surface Alloy
  ACS Nano 16, 4876 (2022) [Crossref]
• Schneider et al., Proximity superconductivity in atom-by-atom crafted quantum dots
  Nature 621, 60 (2023) [Crossref]
• Piquero-Zulaica et al., Engineering quantum states and electronic landscapes through surface molecular nanoarchitectures
  Rev. Mod. Phys. 94, 045008 (2022) [Crossref]
• Dou et al., High-Yield Production of Quantum Corrals in a Surface Reconstruction Pattern
  Nano Lett. 23, 148 (2023) [Crossref]
• Herrera et al., Tunable Dirac points in a two-dimensional non-symmorphic wallpaper group lattice
  Commun Phys 6, 42 (2023) [Crossref]
• Stilp et al., Very weak bonds to artificial atoms formed by quantum corrals
  Science 372, 1196 (2021) [Crossref]
• Karjalainen et al., Hamiltonian Inference from Dynamical Excitations in Confined Quantum Magnets
  Phys. Rev. Applied 20, 024054 (2023) [Crossref]
• Othman et al., Nature of confining potentials in adatom-based quantum corrals and superlattices
  Phys. Rev. B 108, 205409 (2023) [Crossref]
• Ligthart et al., Vertical and lateral manipulation of single Cs atoms on the semiconductor InAs(111)A
  SciPost Phys. 16, 096 (2024) [Crossref]
• van den Broeke et al., Effective spin-orbit gaps in the s and p orbital bands of an artificial honeycomb lattice
  Phys. Rev. Materials 5, 116001 (2021) [Crossref]
• Rejali et al., Confined Vacuum Resonances as Artificial Atoms with Tunable Lifetime
  ACS Nano 16, 11251 (2022) [Crossref]