93 citations · 395 across the 13 of their papers we have counts for
13 papers
Topological flat bands in optical checkerboard-like lattices
Tomi Paananen, Thomas Dahm
We present comparatively simple two-dimensional and three-dimensional checkerboard-like optical lattices possessing nontrivial topological properties. By simple tuning of the param…
Tunneling magnetoresistance devices based on topological insulators: Ferromagnet/insulator/topological-insulator junctions employing BiSe
Matthias Götte, Tomi Paananen, Günter Reiss +1
We theoretically investigate tunneling magnetoresistance (TMR) devices, which are probing the spin-momentum coupled nature of surface states of the three-dimensional topological in…
Appearance of flat surface bands in three-dimensional topological insulators in a ferromagnetic exchange field
Tomi Paananen, Henning Gerber, Matthias Götte +1
We study the properties of the surface states in three-dimensional topological insulators in the presence of a ferromagnetic exchange field. We demonstrate that for layered materia…
Magnetically robust topological edge states and flat bands
Tomi Paananen, Thomas Dahm
We study thin strips of three dimensional topological insulators in the presence of a spin-splitting Zeeman field. We show that under certain conditions the topological edge states…
Finite-size version of the excitonic instability in graphene quantum dots
Tomi Paananen, Reinhold Egger
By a combination of Hartree-Fock simulations, exact diagonalization, and perturbative calculations, we investigate the ground-state properties of disorder-free circular quantum dot…
Signatures of Wigner molecule formation in interacting Dirac fermion quantum dots
Tomi Paananen, Reinhold Egger, Heinz Siedentop
We study interacting massless Dirac fermions confined in a two-dimensional quantum dot. Physical realizations of this problem include a graphene monolayer and the surface state…