64 citations · 369 across the 11 of their papers we have counts for
11 papers
Tunable quantum interference in bilayer graphene in double-resonant Raman scattering
Felix Herziger, Christoph Tyborski, Oliver Ochedowski +2
The line shape of the double-resonant Raman mode in bilayer graphene is often considered to be characteristic for a certain laser excitation energy. Here, in a joint experimen…
Weakly Trapped, Charged, and Free Excitons in Single-Layer MoS2 in the Presence of Defects, Strain, and Charged Impurities
Sudipta Dubey, Simone Lisi, Goutham Nayak +17
Few- and single-layer MoS2 host substantial densities of defects. They are thought to influence the doping level, the crystal structure, and the binding of electron-hole pairs. We…
Direct growth of low-doped graphene on Ge/Si(001) surfaces
J. Dabrowski, G. Lippert, J. Avila +12
The practical difficulties to use graphene in microelectronics and optoelectronics is that the available methods to grow graphene are not easily integrated in the mainstream techno…
In-situ Raman study of laser-induced graphene oxidation
Felix Herziger, Rasim Mirzayev, Emanuele Poliani +1
We present in-situ Raman measurements of laser-induced oxidation in exfoliated single-layer graphene. By using high-power laser irradiation, we can selectively and in a controlled…
Understanding double-resonant Raman scattering in chiral carbon nanotubes: Diameter and energy dependence of the mode
Felix Herziger, Asmus Vierck, Jan Laudenbach +1
We present a theoretical model to describe the double-resonant scattering process in arbitrary carbon nanotubes. We use this approach to investigate the defect-induced mode in…
Beyond double-resonant Raman scattering: UV Raman spectroscopy on graphene, graphite and carbon nanotubes
Christoph Tyborski, Felix Herziger, Roland Gillen +1
We present an analysis of deep-UV Raman measurements of graphite, graphene and carbon nanotubes. For excitation energies above the strong optical absorption peak at the point i…
Double-resonant LA phonon scattering in defective graphene and carbon nanotubes
Felix Herziger, Christoph Tyborski, Oliver Ochedowski +2
We present measurements of the Raman mode in graphene and carbon nanotubes at different laser excitation energies. The Raman mode around 1050 - 1150\,cm originates fro…
Two-dimensional analysis of the double-resonant 2D Raman mode in bilayer graphene
Felix Herziger, Matteo Calandra, Paola Gava +4
By computing the double-resonant Raman scattering cross-section completely from first principles and including electron-electron interaction at the level, we unravel the domin…
Graphene Grown on Ge(001) from Atomic Source
Gunther Lippert, Jarek Dabrowski, Thomas Schroeder +8
Among the many anticipated applications of graphene, some - such as transistors for Si microelectronics - would greatly benefit from the possibility to deposit graphene directly on…
Molecular beam growth of graphene on mica
Gunther Lippert, Jarek Dabrowski, Yuji Yamamoto +5
We demonstrate molecular beam growth of graphene on biotite mica substrates at temperatures below 1000°C. As indicated by optical and atomic force microscopy, evaporation of carbon…
Layer number determination in graphene using out-of-plane vibrations
Felix Herziger, Patrick May, Janina Maultzsch
We present a double-resonant Raman mode in few-layer graphene, which is able to probe the number of graphene layers reliably. This so-called N mode on the low-frequency side of the…