Do Two-Dimensional "Noble Gas Atoms" Produce Molecular Honeycombs at a Metal Surface?
Artikel i vetenskaplig tidskrift, 2011

Anthraquinone self-assembles on Cu(111) into a giant honeycomb network with exactly three molecules on each side. Here we propose that the exceptional degree of order achieved in this system can be explained as a consequence of the confinement of substrate electrons in the pores, with the pore size tailored so that the confined electrons can adopt a noble-gas-like two-dimensional quasi-atom configuration with two filled shells. Formation of identical pores in a related adsorption system (at different overall periodicity due to the different molecule size) corroborates this concept. A combination of photoemission spectroscopy with density functional theory computations (including van der Waals interactions) of adsorbate-substrate interactions allows quantum mechanical modeling of the spectra of the resultant quasi-atoms and their energetics.

microscopy

Quantum dots

corrals

tunneling spectroscopy

scanning tunneling

quantum dots

self-assembly

ag(111)

electronic-structure

scattering

adsorption at surfaces

mirages

confinement

dynamics

molecular networks

microscope

Cu(111)

Författare

J. Wyrick

University of California

D. H. Kim

University of California

D. Z. Sun

University of California

Z. H. Cheng

University of California

W. H. Lu

University of California

Y. M. Zhu

University of California

Kristian Berland

Chalmers, Mikroteknologi och nanovetenskap (MC2), Elektronikmaterial och system

Y. S. Kim

Hanyang University

Lawrence Berkeley National Laboratory

E. Rotenberg

Lawrence Berkeley National Laboratory

M. M. Luo

University of California

Per Hyldgaard

Chalmers, Mikroteknologi och nanovetenskap (MC2), Elektronikmaterial och system

T. L. Einstein

University of Maryland

L. Bartels

University of California

Nano Letters

1530-6984 (ISSN) 1530-6992 (eISSN)

Vol. 11 2944-2948

Styrkeområden

Nanovetenskap och nanoteknik

Materialvetenskap

Ämneskategorier

Fysikalisk kemi

Organisk kemi

Den kondenserade materiens fysik

Fundament

Grundläggande vetenskaper

DOI

10.1021/nl201441b