615 citations · 1.7k across the 36 of their papers we have counts for
37 papers
Observing the spatial and temporal evolution of exciton wave functions
Marcel Theilen, Siegfried Kaidisch, Monja Stettner +12
Excitons, the correlated electron-hole pairs governing optical and transport properties in organic semiconductors, have long resisted direct experimental access to their full quant…
Circular dichroism in the photoelectron angular distribution of achiral molecules
Christian S. Kern, Xiaosheng Yang, Giovanni Zamborlini +9
Circular dichroism in the angular distribution (CDAD) is the effect that the angular intensity distribution of photoemitted electrons depends on the handedness of the incident circ…
Reversible Switching of the Environment-Protected Quantum Spin Hall Insulator Bismuthene at the Graphene/SiC Interface
Niclas Tilgner, Susanne Wolff, Serguei Soubatch +8
Quantum Spin Hall Insulators (QSHI) have been extensively studied both theoretically and experimentally because they exhibit robust helical edge states driven by spin-orbit couplin…
Tomographic identification of all molecular orbitals in a wide binding energy range
Anja Haags, Dominik Brandstetter, Xiaosheng Yang +11
In the past decade, photoemission orbital tomography (POT) has evolved into a powerful tool to investigate the electronic structure of organic molecules adsorbed on surfaces. Here…
Epitaxial growth of mono- and (twisted) multilayer graphene on SiC(0001)
Hao Yin, Mark Hutter, Christian Wagner +3
To take full advantage of twisted bilayers of graphene or other two-dimensional materials, it is essential to precisely control the twist angle between the stacked layers, as this…
Coherent and incoherent excitation pathways in time-resolved photoemission orbital tomography of CuPc/Cu(001)-2O
Alexa Adamkiewicz, Miriam Raths, Monja Stettner +10
Time-resolved photoemission orbital tomography (tr-POT) offers unique possibilities for tracing molecular electron dynamics. The recorded pump-induced changes of the angle-resolved…
One-dimensional topological superconductivity in a van der Waals heterostructure
Jose Martinez-Castro, Tobias Wichmann, Keda Jin +8
One-dimensional (1D) topological superconductivity is a state of matter that is not found in nature. However, it can be realised, for example, by inducing superconductivity into th…
Electron spin secluded inside a bottom-up assembled standing metal-molecule nanostructure
Taner Esat, Markus Ternes, Ruslan Temirov +1
Artificial nanostructures, fabricated by placing building blocks such as atoms or molecules in well-defined positions, are a powerful platform in which quantum effects can be studi…
A novel high-current, high-resolution, low-kinetic-energy electron source for inverse photoemission spectroscopy
H. Ibach, H. Sato, M. Kubo +3
A high-current electron source for inverse photoemission spectroscopy (IPES) is described. The source comprises a thermal cathode electron emission system, an electrostatic deflect…
How cold is the junction of a millikelvin scanning tunnelling microscope?
Taner Esat, Xiaosheng Yang, Farhad Mustafayev +3
We employ a scanning tunnelling microscope (STM) cooled to millikelvin temperatures by an adiabatic demagnetization refrigerator (ADR) to perform scanning tunnelling spectroscopy (…
Benchmarking theoretical electronic structure methods with photoemission orbital tomography
Anja Haags, Xiaosheng Yang, Larissa Egger +10
In the past decade, photoemission orbital tomography (POT) has evolved into a powerful tool to investigate the electronic structure of organic molecules adsorbed on (metallic) surf…
Portrait of locally driven quantum phase transition cascades in a molecular monolayer
Soroush Arabi, Taner Esat, Aizhan Sabitova +7
Strongly interacting electrons in layered materials give rise to a plethora of emergent phenomena, such as unconventional superconductivity. heavy fermions, and spin textures with…
Boron nitride on SiC(0001)
You-Ron Lin, Markus Franke, Shayan Parhizkar +8
In the field of van der Waals heterostructures, the twist angle between stacked two-dimensional (2D) layers has been identified to be of utmost importance for the properties of the…
Nanoscale tip positioning with a multi-tip scanning tunneling microscope using topography images
A. Leis, V. Cherepanov, B. Voigtländer +1
Multi-tip scanning tunneling microscopy (STM) is a powerful method to perform charge transport measurements at the nanoscale. With four STM tips positioned on the surface of a samp…
Vertical structure of Sb-intercalated quasifreestanding graphene on SiC(0001)
You-Ron Lin, Susanne Wolff, Philip Schädlich +7
Using the normal incidence x-ray standing wave technique as well as low energy electron microscopy we have investigated the structure of quasi-freestanding monolayer graphene (QFML…
Momentum-space imaging of σ-orbitals for chemical analysis
Anja Haags, Xiaosheng Yang, Larissa Egger +11
Tracing the modifications of molecules in surface chemical reactions benefits from the possibility to image their orbitals. While delocalized frontier orbitals with π-character are…
The Vertical Position of Sr Dopants in the SrBiSe Superconductor
You-Ron Lin, Mahasweta Bagchi, Serguei Soubatch +6
The discovery of topological superconductivity in doped BiSe made this class of materials highly important for the field of condensed matter physics. However, the structura…
A millikelvin scanning tunneling microscope in ultra-high vacuum with adiabatic demagnetization refrigeration
Taner Esat, Peter Borgens, Xiaosheng Yang +5
We present the design and performance of an ultra-high vacuum (UHV) scanning tunneling microscope (STM) that uses adiabatic demagnetization of electron magnetic moments for control…
Control of Scanning Quantum Dot Microscopy
Michael Maiworm, Christian Wagner, Taner Esat +4
Scanning quantum dot microscopy is a recently developed high-resolution microscopy technique that is based on atomic force microscopy and is capable of imaging the electrostatic po…
Tracing orbital images on ultrafast time scales
Robert Wallauer, Miriam Raths, Klaus Stallberg +10
Frontier orbitals, i.e., the highest occupied and lowest unoccupied orbitals of a molecule, generally determine molecular properties, such as chemical bonding and reactivities. Con…
kMap.py: A Python program for simulation and data analysis in photoemission tomography
Dominik Brandstetter, Xiaosheng Yang, Daniel Lüftner +2
For organic molecules adsorbed as well-oriented ultra-thin films on metallic surfaces, angle-resolved photoemission spectroscopy has evolved into a technique called photoemission t…
Fusing Online Gaussian Process-Based Learning and Control for Scanning Quantum Dot Microscopy
Maik Pfefferkorn, Michael Maiworm, Christian Wagner +2
Elucidating electrostatic surface potentials contributes to a deeper understanding of the nature of matter and its physicochemical properties, which is the basis for a wide field o…
Autonomous robotic nanofabrication with reinforcement learning
Philipp Leinen, Malte Esders, Kristof T. Schütt +3
The ability to handle single molecules as effectively as macroscopic building-blocks would enable the construction of complex supramolecular structures inaccessible to self-assembl…
Inelastic electron tunneling spectroscopy for probing strongly correlated many-body systems by scanning tunneling microscopy
Fabian Eickhoff, Elena Kolodzeiski, Taner Esat +7
We present an extension of the tunneling theory for scanning tunneling microcopy (STM) to include different types of vibrational-electronic couplings responsible for inelastic cont…