216 citations · 1k across the 15 of their papers we have counts for
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Emergence of radial Rashba spin-orbit fields in twisted van der Waals heterostructures
Tobias Frank, Paulo E. Faria Junior, Klaus Zollner +1
Rashba spin-orbit coupling is a quintessential spin interaction appearing in virtually any electronic heterostructure. Its paradigmatic spin texture in the momentum space forms a t…
Edge states in proximitized graphene ribbons and flakes in a perpendicular magnetic field: emergence of lone pseudohelical pairs and pure spin-current states
Yaroslav Zhumagulov, Tobias Frank, Jaroslav Fabian
We investigate the formation of edge states in graphene ribbons and flakes with proximity induced valley-Zeeman and Rashba spin-orbit couplings in the presence of a perpendicular m…
Landau levels in spin-orbit coupling proximitized graphene: bulk states
Tobias Frank, Jaroslav Fabian
We study the magnetic-field dependence of Landau levels in graphene proximitized by large spin-orbit coupling materials, such as transition-metal dichalcogenides or topological ins…
Quantum Anomalous Hall Effects in Graphene from Proximity-Induced Uniform and Staggered Spin-Orbit and Exchange Coupling
Petra Högl, Tobias Frank, Klaus Zollner +3
We investigate an effective model of proximity modified graphene (or symmetrylike materials) with broken time-reversal symmetry. We predict the appearance of quantum anomalous Hall…
Chiral Majorana fermions in graphene from proximity-induced superconductivity
Petra Högl, Tobias Frank, Denis Kochan +2
We present a detailed theoretical study of chiral topological superconductor phases in proximity-superconducting graphene systems based on an effective model inspired by DFT simula…
Many-body quantum Monte Carlo study of 2D materials: cohesion and band gap in single-layer phosphorene
Tobias Frank, Rene Derian, Kamil Tokar +3
Quantum Monte Carlo (QMC) is applied to obtain the fundamental (quasiparticle) electronic band gap, , of a semiconducting two-dimensional (2D) phosphorene whose optical and el…
Femtosecond photo-switching of interface polaritons in black phosphorus heterostructures
Markus A. Huber, Fabian Mooshammer, Markus Plankl +8
The possibility of hybridizing collective electronic motion with mid-infrared (mid-IR) light to form surface polaritons has made van der Waals layered materials a versatile platfor…
Protected pseudohelical edge states in proximity graphene ribbons and flakes
Tobias Frank, Petra Högl, Martin Gmitra +2
We investigate topological properties of models that describe graphene on realistic substrates which induce proximity spin-orbit coupling in graphene. A phase diagra…
Excitonic valley effects in monolayer WS under high magnetic fields
Gerd Plechinger, Philipp Nagler, Ashish Arora +10
Transition-metal dichalcogenides can be easily produced as atomically thin sheets, exhibiting the possibility to optically polarize and read out the valley pseudospin of extremely…
Copper adatoms on graphene: theory of orbital and spin-orbital effects
Tobias Frank, Susanne Irmer, Martin Gmitra +2
We present a combined DFT and model Hamiltonian analysis of spin-orbit coupling in graphene induced by copper adatoms in the bridge and top positions, representing isolated atoms i…
Theory of proximity-induced exchange coupling in graphene on hBN/(Co, Ni)
Klaus Zollner, Martin Gmitra, Tobias Frank +1
We perform systematic first-principles calculations of the proximity exchange coupling, induced by cobalt (Co) and nickel (Ni) in graphene, via a few (up to three) layers of hexago…
Theory of electronic and spin-orbit proximity effects in graphene on Cu(111)
Tobias Frank, Martin Gmitra, Jaroslav Fabian
We study orbital and spin-orbit proximity effects in graphene adsorbed to the Cu(111) surface by means of density functional theory (DFT). The proximity effects are caused mainly b…
Spin-orbit coupling in methyl functionalized graphene
Klaus Zollner, Tobias Frank, Susanne Irmer +3
We present first-principles calculations of the electronic band structure and spin-orbit effects in graphene functionalized with methyl molecules in dense and dilute limits. The de…
Spin-orbit coupling in fluorinated graphene
Susanne Irmer, Tobias Frank, Sebastian Putz +3
We report on theoretical investigations of the spin-orbit coupling effects in fluorinated graphene. First-principles density functional calculations are performed for the dense and…