486 citations · 3.7k across the 32 of their papers we have counts for
12 papers · 1 filter
Triggering a global density wave instability in graphene via local symmetry-breaking
Amy C. Qu, Pascal Nigge, Stefan Link +9
Two-dimensional quantum materials offer a robust platform for investigating the emergence of symmetry-broken ordered phases owing to the high tuneability of their electronic proper…
Momentum microscopy of Pb-intercalated graphene on SiC: charge neutrality and electronic structure of interfacial Pb
Bharti Matta, Philipp Rosenzweig, Olaf Bolkenbaas +2
Intercalation is an established technique for tailoring the electronic structure of epitaxial graphene. Moreover, it enables the synthesis of otherwise unstable two-dimensional (2D…
Surface charge-transfer doping a quantum-confined silver monolayer beneath epitaxial graphene
Philipp Rosenzweig, Hrag Karakachian, Dmitry Marchenko +1
Recently the graphene/SiC interface has emerged as a versatile platform for the epitaxy of otherwise unstable, monoelemental, two-dimensional (2D) layers via intercalation. Intrins…
Overdoping graphene beyond the van Hove singularity
Philipp Rosenzweig, Hrag Karakachian, Dmitry Marchenko +2
At very high doping levels the van Hove singularity in the band of graphene becomes occupied and exotic ground states possibly emerge, driven by many-body interactions. Emplo…
Weak localization measurements of electronic scattering rates in Li-doped epitaxial graphene
Ali Khademi, Kristen Kaasbjerg, Pinder Dosanjh +4
Early experiments on alkali-doped graphene demonstrated that the dopant adatoms modify the conductivity of graphene significantly, as extra carriers enhance conductivity while Coul…
Electronic properties of WS on epitaxial graphene on SiC(0001)
Stiven Forti, Antonio Rossi, Holger Büch +12
This work reports an electronic and micro-structural study of an appealing system for optoelectronics: tungsten disulphide WS on epitaxial graphene (EG) on SiC(0001). The WS$_2…
Alkali doping of graphene: the crucial role of high temperature annealing
Ali Khademi, Ebrahim Sajadi, Pinder Dosanjh +5
The doping efficiency of lithium deposited at cryogenic temperatures on epitaxial and CVD monolayer graphene has been investigated under ultra-high vacuum conditions. Change of cha…
Phonon-pump XUV-photoemission-probe in graphene: evidence for non-adiabatic heating of Dirac carriers by lattice deformation
Isabella Gierz, Matteo Mitrano, Hubertus Bromberger +11
We modulate the atomic structure of bilayer graphene by driving its lattice at resonance with the in-plane E1u lattice vibration at 6.3um. Using time- and angle-resolved photoemiss…
Local transport measurements on epitaxial graphene
Jens Baringhaus, Frederik Edler, Christoph Neumann +4
Growth of large-scale graphene is still accompanied by imperfections. By means of a four-tip STM/SEM the local structure of graphene grown on SiC(0001) was correlated with scanning…
Adatoms and clusters of 3d transition metals on graphene: Electronic and magnetic configurations
T. Eelbo, M. Waśniowska, P. Thakur +8
We investigate the electronic and magnetic properties of single Fe, Co, and Ni atoms and clusters on monolayer graphene (MLG) on SiC(0001) by means of scanning tunneling microscopy…
Snapshots of non-equilibrium Dirac carrier distributions in graphene
Isabella Gierz, Jesse C. Petersen, Matteo Mitrano +7
The optical properties of graphene are made unique by the linear band structure and the vanishing density of states at the Dirac point. It has been proposed that even in the absenc…
Revealing the atomic structure of the buffer layer between SiC(0001) and epitaxial graphene
Sarah Goler, Camilla Coletti, Vincenzo Piazza +8
On the SiC(0001) surface (the silicon face of SiC), epitaxial graphene is obtained by sublimation of Si from the substrate. The graphene film is separated from the bulk by a carbon…