• Corpus ID: 248965032

Coupling confined states in nanoporous molecular networks to an atomic force microscope

  title={Coupling confined states in nanoporous molecular networks to an atomic force microscope},
  author={Philipp d’Astolfo and Xing Wang and Xunshan Liu and Marcin Kisiel and Carl Drechsel and Alexis and Baratoff and Ulrich Aschauer and Silvio Decurtins and Shi‐Xia Liu and R{\'e}my Pawlak and Ernst Meyer},
Periodic confinement of surface electrons in atomic structures or extended nanoporous molecular networks is the archetype of a two-dimensional quantum dot (QD) superlattice. Yet, an electrical control of such an artificial lattice by external gating has never been demonstrated. Here we show the capacitive coupling between an atomic force microscope (AFM) and quantum states in highly crystalline nanoporous molecular networks on Ag(111). We characterize their local density of states (LDOS) using… 
1 Citations

Figures from this paper

Polygonal tessellations as predictive models of molecular monolayers

a) Department of Morphology and Geometric Modeling, and MTA-BME Morphodynamics Research Group, Budapest University of Technology and Economics, H-1111, Budapest, Hungary. b) Department of Physics,



Periodic Charging of Individual Molecules Coupled to the Motion of an Atomic Force Microscopy Tip.

Individual molecules at the edges of self-assembled islands grown on Ag(111) can be deliberately switched in their charge state with the electric field from a scanning-probe tip, and the signature of the dynamic charging response provides information on the electronic coupling of the molecule to the substrate.

Energy levels of few-electron quantum dots imaged and characterized by atomic force microscopy

It is shown how electrostatic force detection using atomic force microscopy reveals the electronic structure of individual and coupled self-assembled quantum dots.

Measuring the Charge State of an Adatom with Noncontact Atomic Force Microscopy

It is shown that a tuning-fork atomic force microscope (AFM) operating in a noncontact mode at cryogenic temperatures can resolve the charge state of gold and silver atoms absorbed on a sodium chloride film.

Detection of single-electron charging in an individual InAs quantum dot by noncontact atomic-force microscopy.

Jumps in the frequency shift are attributed to a single-electron tunneling between the dot and the back electrode governed by the Coulomb blockade effect, and are consistent with a model based on the free energy of the system.

Band Formation from Coupled Quantum Dots Formed by a Nanoporous Network on a Copper Surface

The two-dimensional free electron gas of the Cu(111) surface state can be trapped within the pores of an organic nanoporous network, which can be regarded as a regular array of quantum dots, which is indicative of electronic coupling between neighboring pore states.

Manipulating and probing the distribution of excess electrons in an electrically-isolated self-assembled molecular structure.

Control over specific charge distributions in the self-assembled structure has been achieved with single-molecule precision, paving the way towards the design of data processing platforms based on molecular nanostructures.

Confinement of Electrons to Quantum Corrals on a Metal Surface

Tuning spectroscopy performed inside of the corrals revealed a series of discrete resonances, providing evidence for size quantization and STM images show that the corral's interior local density of states is dominated by the eigenstate density expected for an electron trapped in a round two-dimensional box.

Mechanical dissipation from charge and spin transitions in oxygen-deficient SrTiO3 surfaces

It is demonstrated that tip-induced charge and spin state transitions in oxygen vacancies at SrTiO3 surface are revealed by AFM dissipation measurements.

Mechanical dissipation via image potential states on a topological insulator surface

Non-contact dissipation measurements reveal an interplay between electronic states and nanomechanics in Bi2Te3, a canonical topological insulator with protected metallic surface states with implications for coupling a mechanical oscillator to the generic quantum material.

Quantum dissipation driven by electron transfer within a single molecule investigated with atomic force microscopy

Atomic force microscopy under ultra-high vacuum conditions is used to study intramolecular single electron transfer within a single molecule and to investigate energy dissipation process related to the electron transfer as a function of temperature.