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33 papers · 2 filters
Scanning tunneling microscopy with InAs nanowire tips
Kilian Flöhr, Kamil Sladek, H. Yusuf Günel +5
Indium arsenide nanowires grown by selective-area vapor phase epitaxy are used as tips for scanning tunneling microscopy (STM). The STM tips are realized by positioning the wires m…
Role of electronic excitations in magneto-Raman spectra of graphene
Oleksiy Kashuba, Vladimir I. Fal'ko
We investigate the signature of the low-energy electronic excitations in the Raman spectrum of monolayer and bilayer graphenes. The dominant contribution to the Raman spectra is du…
A two-atom electron pump
B. Roche, R. -P. Riwar, B. Voisin +6
The fabrication of single atom transistors paved the way for electronics based on single dopants. Recently the spectrum of a single dopant was measured electrically by coupling two…
Laser-induced effects on the electronic features of graphene nanoribbons
Hernan L. Calvo, Pablo M. Perez-Piskunow, Stephan Roche +1
We study the interplay between lateral confinement and photon-induced processes on the electronic properties of illuminated graphene nanoribbons. We find that by tuning the device…
Dielectric screening of the Kohn anomaly of graphene on hexagonal boron nitride
F. Forster, A. Molina-Sanchez, S. Engels +5
Kohn anomalies in three-dimensional metallic crystals are dips in the phonon dispersion that are caused by abrupt changes in the screening of the ion-cores by the surrounding elect…
Zero-frequency noise in adiabatically driven, interacting quantum systems
Roman-Pascal Riwar, Janine Splettstoesser, Jürgen König
We investigate current-current correlations of adiabatic charge pumping through interacting quantum dots weakly coupled to reservoirs. To calculate the zero-frequency noise for a t…