366 citations · 944 across the 16 of their papers we have counts for
4 papers · 1 filter
Effective models for strong electronic correlations at graphene edges
Manuel J. Schmidt, Michael Golor, Thomas C. Lang +1
We describe a method for deriving effective low-energy theories of electronic interactions at graphene edges. Our method is applicable to general edges of honeycomb lattices (zigza…
Strong correlations at topological insulator surfaces and the breakdown of the bulk-boundary correspondence
Manuel J. Schmidt
The criteria for strong correlations on surfaces of three-dimensional topological insulators are discussed. Usually, the Coulomb repulsion at such surfaces is too weak for driving…
Exact diagonalization study of the tunable edge magnetism in graphene
David J. Luitz, Fakher F. Assaad, Manuel J. Schmidt
The tunable magnetism at graphene edges with lengths of up to 48 unit cells is analyzed by an exact diagonalization technique. For this we use a generalized interacting one-dimensi…
Magnetization-Switched Metal-Insulator Transition in a (Ga,Mn)As Tunnel Device
K. Pappert, M. J. Schmidt, S. Hümpfner +6
We observe the occurrence of an Efros-Shklovskii gap in (Ga,Mn)As based tunnel junctions. The occurrence of the gap is controlled by the extent of the hole wave-function on the Mn…