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Interlayer excitons and Band Alignment in MoS/hBN/WSe van der Waals Heterostructures
Simone Latini, Kirsten T. Winther, Thomas Olsen +1
Van der Waals heterostructures (vdWH) provide an ideal playground for exploring light-matter interactions at the atomic scale. In particular, structures with a type-II band alignme…
Surface theorem for the Chern-Simons axion coupling
Thomas Olsen, Maryam Taherinejad, David Vanderbilt +1
The Chern-Simons axion coupling of a bulk insulator is only defined modulo a quantum of e^2/h. The quantized part of the coupling is uniquely defined for a bounded insulating sampl…
Designing in-plane heterostructures of quantum spin hall insulators from first principles: 1T'-MoS2 with adsorbates
Thomas Olsen
Interfaces between normal and topological insulators are bound to host metallic states that are protected by time-reversal symmetry and are therefore robust against disorder and in…
Defect Tolerant Monolayer Transition Metal Dichalcogenides
Mohnish Pandey, Filip A. Rasmussen, Korina Kuhar +3
Localized electronic states formed inside the band gap of a semiconductor due to crystal defects can be detrimental to the material's optoelectronic properties. Semiconductors with…
Metal-insulator transition in disordered systems from the one-body density matrix
Thomas Olsen, Raffaele Resta, Ivo Souza
The insulating state of matter can be probed by means of a ground state geometrical marker, which is closely related to the modern theory of polarization (based on a Berry phase).…