217 citations · 1.3k across the 23 of their papers we have counts for
12 papers · 1 filter
1D Interface-Induced Real-Space Berry Curvature Gradient Encoded in SpinValley-Coupled Nonlinear Photocurrent in Lateral Heterostructure
Suman Kumar Chakraborty, Jinu James, Biswajeet Nayak +6
Symmetry breaking enables helicity-dependent optoelectronic responses in quantum materials. In two-dimensional transition-metal dichalcogenides (TMDs), circular photocurrent (CPC)…
Electrically Controlled Interfacial Charge Transfer Induced Excitons in MoSe2-WSe2 Lateral Heterostructure
Baisali Kundu, Priyanka Mondal, David Tebbe +9
Controlling excitons and their transport in two-dimensional (2D) transition metal dichalcogenides (TMDs) heterostructures is central to advancing photonics and electronics on-chip…
Negative electronic compressibility in charge islands in twisted bilayer graphene
Robin J. Dolleman, Alexander Rothstein, Ammon Fischer +8
We report on the observation of negative electronic compressibility in twisted bilayer graphene for Fermi energies close to insulating states. To observe this negative compressibil…
Distance dependence of the energy transfer mechanism in WS-graphene heterostructures
David Tebbe, Marc Schütte, K. Watanabe +4
We report on the mechanism of energy transfer in van der Waals heterostructures of the two-dimensional semiconductor WS and graphene with varying interlayer distances, achieved…
An open-source robust machine learning platform for real-time detection and classification of 2D material flakes
Jan-Lucas Uslu, Taoufiq Ouaj, David Tebbe +8
The most widely used method for obtaining high-quality two-dimensional materials is through mechanical exfoliation of bulk crystals. Manual identification of suitable flakes from t…
Tailoring the dielectric screening in WS-graphene heterostructures
David Tebbe, Marc Schütte, Kenji Watanabe +4
The environment contributes to the screening of Coulomb interactions in two-dimensional semiconductors. This can potentially be exploited to tailor material properties as well as f…
Experimental observation of ABCB stacked tetralayer graphene
Konstantin G. Wirth, Jonas B. Profe, Alexander Rothstein +10
In tetralayer graphene, three inequivalent layer stackings should exist, however, only rhombohedral (ABCA) and Bernal (ABAB) stacking have so far been observed. The three stacking…
Rigid band shifts in two-dimensional semiconductors through environmental screening
Lutz Waldecker, Archana Raja, Malte Rösner +9
We investigate the effects of environmental dielectric screening on the electronic dispersion and the band gap in the atomically-thin, quasi two-dimensional (2D) semiconductor WS$_…
Intrinsic Lifetime of Higher Excitonic States in Tungsten Diselenide Monolayers
Samuel Brem, Jonas Zipfel, Malte Selig +7
The reduced dielectric screening in atomically thin transition metal dichalcogenides allows to study the hydrogen-like series of higher exciton states in optical spectra even at ro…
Ultrafast heat flow in heterostructures of Au nanoclusters on thin-films: atomic-disorder induced by hot electrons
Thomas Vasileiadis, Lutz Waldecker, Dawn Foster +5
We study the ultrafast structural dynamics, in response to electronic excitations, in heterostructures composed of Au nanoclusters on thin-film substrates with the use of f…
Momentum-Resolved View of Electron-Phonon Coupling in Multilayer WSe
Lutz Waldecker, Roman Bertoni, H. Hübener +5
We investigate the interactions of photoexcited carriers with lattice vibrations in thin films of the layered transition metal dichalcogenide (TMDC) WSe. Employing femtosecond…
Generation and evolution of spin-, valley- and layer-polarized excited carriers in inversion-symmetric WSe2
Roman Bertoni, Christopher W. Nicholson, Lutz Waldecker +11
Manipulation of spin and valley degrees of freedom is a key step towards realizing novel quantum technologies, for which atomically thin transition metal dichalcogenides (TMDCs) ha…