133 citations · 229 across the 15 of their papers we have counts for
15 papers
Creation and characterization of leviton excitations in tight-binding chains
Stephen R. McMillan, Thomas Frederiksen, Géza Giedke
Levitons are minimal-excitation electronic wave packets generated by Lorentzian voltage pulses and constitute a central resource for electron quantum optics. Their creation and def…
Identification and optimization of accurate spin models for Fermi-Hubbard ladders using matrix product states
Andoni Agirre, Thomas Frederiksen, Geza Giedke +1
Open-shell nanographenes offer a controlled setting to study correlated magnetism emerging from -electron systems. Here, we study non-bipartite Fermi-Hubbard ladders describing…
Topological Engineering of a Frustrated Antiferromagnetic Triradical in Aza-Triangulene Architectures
Francisco Romero-Lara, Manuel Vilas-Varela, Manish Kumar +16
Open-shell nanographenes provide a versatile platform to host unconventional magnetic states within their π-conjugated networks. Particularly appealing are graphene architectures t…
Spin and Charge Control of Topological End States in Chiral Graphene Nanoribbons on a 2D Ferromagnet
Leonard Edens, Francisco Romero Lara, Trisha Sai +5
Tailor-made graphene nanostructures can exhibit symmetry-protected topological boundary states that host localized spin- moments. However, one frequently observes charge trans…
On-surface Synthesis of a Ferromagnetic Molecular Spin Trimer
Alessio Vegliante, Manuel Vilas-Varela, Ricardo Ortiz +12
Triangulenes are prototypical examples of open-shell nanographenes. Their magnetic properties, arising from the presence of unpaired electrons, can be extensively tuned by modi…
Single-molecule electroluminescence: crossover from weak to strong coupling
Andrés Bejarano, Moritz Frankerl, Rémi Avriller +2
We develop a microscopic model to investigate current-induced light emission in single-molecule tunnel junctions, where a two-level system interacts with a plasmonic field. Using t…
From Solution to Surface: Persistence of the Diradical Character of a Diindenoanthracene Derivative on a Metallic Substrate
Jeremy Hieulle, Carlos Garcia Fernandez, Niklas Friedrich +7
Organic diradicals are envisioned as elementary building blocks for designing a new generation of spintronic devices and have been used in constructing prototypical field effect tr…
Electron beam splitting effect with crossed zigzag graphene nanoribbons in high-spin metallic states
Sofia Sanz, Géza Giedke, Daniel Sánchez-Portal +1
Here we analyze the electron transport properties of a device formed of two crossed graphene nanoribbons with zigzag edges (ZGNRs) in a spin state with total magnetization differen…
Substrate stabilization of Jahn-Teller distortion in a single molecule
Moritz Frankerl, Laerte L. Patera, Felix Giselbrecht +3
Charge-state transitions of a single Cu-phthalocyanine molecule adsorbed on an insulating layer of NaCl on Cu(111) are probed by means of alternate charging scanning tunneling micr…
Systematic Modulation of Charge and Spin in Graphene Nanoribbons on MgO
Amelia Domínguez-Celorrio, Leonard Edens, Sofía Sanz +7
Graphene nanostructures can be engineered with atomic precision to display customized electronic states with application in spintronics or quantum technologies. In order to take ad…
Tuning the Spin Interaction in Non-planar Organic Diradicals Through Mechanical Manipulation
Alessio Vegliante, Saleta Fernandez, Ricardo Ortiz +12
Open-shell polycyclic aromatic hydrocarbons (PAHs) represent promising building blocks for carbon-based functional magnetic materials. Their magnetic properties stem from the prese…
On-surface synthesis and collective spin excitations of a triangulene-based nanostar
Jeremy Hieulle, Silvia Castro, Niklas Friedrich +8
Triangulene nanographenes are open-shell molecules with predicted high spin state due to the frustration of their conjugated network. Their long-sought synthesis became recently po…
Nanomechanics of a Hydrogen Molecule Suspended between Two Equally Charged Tips
W. Schattke, T. Frederiksen, M. A. Van Hove +1
Geometric configuration and energy of a hydrogen molecule centered between two point-shaped tips of equal charge are calculated with the variational quantum Monte-Carlo (QMC) metho…
Search for a Metallic Dangling-Bond Wire on -doped H-passivated Semiconductor Surfaces
Mads Engelund, Nick Papior, Pedro Brandimarte +3
We have theoretically investigated the electronic properties of neutral and -doped dangling bond (DB) quasi-one-dimensional structures (lines) in the Si(001):H and Ge(001):H sub…
On the Mechanical and Electronic Properties of Thiolated Gold Nanocrystals
K. Smaali, S. Desbief, G. Foti +7
We present a quantitative exploration, combining experiment and simulation, of the mechanical and electronic properties, as well as the modifications induced by an alkylthiolated c…