136 citations · 271 across the 12 of their papers we have counts for
12 papers
Probing up-conversion electroluminescence of decoupled porphyrin molecules in a plasmonic nanocavity
Li-Qing Zheng, Fábio J. R. Costa, Abhishek Grewal +6
Molecular triplet states can produce significant phosphorescence and act as a relay state for luminescence, such as in up-conversion processes. While this property makes triplet em…
Single-molecule phosphorescence and intersystem crossing in a coupled exciton-plasmon system
Abhishek Grewal, Hiroshi Imada, Kuniyuki Miwa +6
Scanning the sharp metal tip of a scanning tunneling microscope (STM) over a molecule allows tuning the coupling between the tip plasmon and a molecular fluorescence emitter. This…
Scanning Tunneling Microscopy for Molecules: Manipulating Electron Transport through the Conduction Gap by varying Buffer Layer
Abhishek Grewal, Christopher C. Leon, Olle Gunnarsson
In scanning tunneling microscopy of molecules, an insulating buffer layer is often introduced to reduce interactions between adsorbed molecules and the substrate. Focusing on tunne…
Scanning Tunneling Microscopy for Molecules: Effects of Electron Propagation into Vacuum
Abhishek Grewal, Christopher C. Leon, Klaus Kuhnke +2
Using scanning tunneling microscopy (STM), we experimentally and theoretically investigate isolated platinum phthalocyanine (PtPc) molecules adsorbed on atomically thin NaCl(100) v…
Anionic Character of the Conduction Band of Sodium Chloride
Christopher C. Leon, Abhishek Grewal, Klaus Kuhnke +2
The alkali halides are ionic compounds. Each alkali atom donates an electron to a halogen atom, leading to ions with full shells. The valence band is mainly located on halogen atom…
Character of electronic states in the transport gap of molecules on surfaces
Abhishek Grewal, Christopher C. Leon, Klaus Kuhnke +2
We report on scanning tunneling microscopy (STM) topographs of individual metal phthalocyanines (MPc) on a thin salt (NaCl) film on a gold substrate, at tunneling energies within t…
Atomic-scale structural fluctuations of a plasmonic cavity
Anna Rosławska, Pablo Merino, Abhishek Grewal +3
We study fluctuations in plasmonic electroluminescence at the single-atom limit profiting from the precision of a low-temperature scanning tunneling microscope. First, we investiga…
Gigahertz frame rate imaging of charge-injection dynamics in a molecular light source
Anna Rosławska, Pablo Merino, Christopher C. Leon +4
Light sources on the scale of single molecules can be addressed and characterized on their proper sub-nanometer scale by scanning tunneling microscopy induced luminescence (STML).…
Probing the magnetism of topological end-states in 5-armchair graphene nanoribbons
James Lawrence, Pedro Brandimarte, Alejandro Berdonces +5
We extensively characterize the electronic structure of ultra-narrow graphene nanoribbons (GNRs) with armchair edges and zig-zag termini that have 5 carbon atoms across their width…
Single Photon Emission from a Plasmonic Light Source Driven by a Local Field-Induced Coulomb Blockade
Christopher C. Leon, Olle Gunnarsson, Dimas G. de Oteyza +5
A hallmark of quantum control is the ability to manipulate quantum emission at the nanoscale. Through scanning tunneling microscopy induced luminescence (STML) we are able to gener…
A single hydrogen molecule as an intensity chopper in an electrically-driven plasmonic nanocavity
Pablo Merino, Anna Rosławska, Christopher C. Leon +5
Photon statistics is a powerful tool for characterizing the emission dynamics of nanoscopic systems and their photophysics. Recent advances that combine correlation spectroscopy wi…
Photon super-bunching from a generic tunnel junction
Christopher Leon, Anna Rosławska, Abhishek Grewal +3
Generating correlated photon pairs at the nanoscale is a prerequisite to creating highly integrated optoelectronic circuits that perform quantum computing tasks based on heralded s…