214 citations · 1.7k across the 38 of their papers we have counts for
12 papers · 1 filter
Spin Manipulation by Creation of Single-Molecule Radical Cations
Sujoy Karan, Na Li, Yajie Zhang +13
All-trans-retinoic acid (ReA), a closed-shell organic molecule comprising only C, H, and O atoms, is investigated on a Au(111) substrate using scanning tunneling microscopy and spe…
Evolution of unoccupied resonance during the synthesis of a silver dimer on Ag(111)
Alexander Sperl, Joerg Kroeger, Richard Berndt +2
Silver dimers were fabricated on Ag(111) by single-atom manipulation using the tip of a cryogenic scanning tunnelling microscope. An unoccupied electronic resonance was observed to…
Scanning tunneling microscopy and kinetic Monte Carlo investigation of Cesium superlattices on Ag(111)
M. Ziegler, J. Kroeger, R. Berndt +2
Cesium adsorption structures on Ag(111) were characterized in a low-temperature scanning tunneling microscopy experiment. At low coverages, atomic resolution of individual Cs atoms…
Quantized Conductance of a Single Magnetic Atom
N. Neel, J. Kroeger, R. Berndt
A single Co atom adsorbed on Cu(111) or on ferromagnetic Co islands is contacted with non-magnetic W or ferromagnetic Ni tips in a scanning tunneling microscope. When the Co atom b…
Rotation of C60 in a single-molecule contact
N. Neel, L. Limot, J. Kroeger +1
The orientation of individual C60 molecules adsorbed on Cu(100) is reversibly switched when the tip of a scanning tunneling microscope is approached to contact the molecule. The pr…
Unoccupied states of individual silver clusters and chains on Ag(111)
A. Sperl, J. Kroeger, N. Neel +4
Size-selected silver clusters on Ag(111) were fabricated with the tip of a scanning tunneling microscope. Unoccupied electron resonances give rise to image contrast and spectral fe…
Ultraviolet light emission from Si in a scanning tunneling microscope
Patrick Schmidt, Richard Berndt, Mikhail I. Vexler
Ultraviolet and visible radiation is observed from the contacts of a scanning tunneling microscope with Si(100) and (111) wafers. This luminescence relies on the presence of hot el…
Lifetimes of electrons in the Shockley surface state band of Ag(111)
M. Becker, S. Crampin, R. Berndt
We present a theoretical many-body analysis of the electron-electron (e-e) inelastic damping rate of electron-like excitations in the Shockley surface state band of Ag(111). It…
Controlled Contact to a C60 Molecule
N. Neel, J. Kroger, L. Limot +3
The conductance of C60 on Cu(100) is investigated with a low-temperature scanning tunneling microscope. At the transition from tunneling to the contact regime the conductance of C6…
Adsorption geometry of Cu(111)-Cs studied by scanning tunneling microscopy
Th. von Hofe, J. Kroeger, R. Berndt
Using scanning tunneling microscopy at low temperatures we investigated the adsorbate system Cu(111)-Cs for various cesium coverages. At low coverages we observe a hexagonally orde…
Role of elastic scattering in electron dynamics at ordered alkali overlayers on Cu(111)
C. Corriol, V. M. Silkin, D. Sanchez-Portal +7
Scanning tunneling spectroscopy of p(2x2) Cs and Na ordered overlayers on Cu(111) reveals similar line widths of quasi two-dimensional quantum well states despite largely different…
Scanning tunnelling spectroscopy of electron resonators
Richard Berndt, Joerg Kliewer, S. Crampin
The electronic structure of artificial Mn atom arrays on Ag(111) is characterized in detail with scanning tunnelling spectroscopy and spectroscopic imaging at low temperature. We d…