Graphene, the single layer of hexagonally coordinated carbon, is a two-dimensional
material with many unusual properties; its physical realization a few years ago has caused a …

The surface of a topological insulator plays host to an odd number of linearly-dispersing
Dirac fermions, protected against back-scattering by time-reversal symmetry. Such …

The unusual transport properties of graphene are the direct consequence of a peculiar band
structure near the Dirac point. We determine the shape of the π bands and their …

Abstract Three-dimensional (3D) electronic band structure is fundamental for understanding
a vast diversity of physical phenomena in solid-state systems, including topological phases …

Angle-resolved photoemission spectroscopy (ARPES) is a well-established experimental
technique that allows probing of the electronic structure of quantum materials using …

We report a study of the valence band dispersion of twisted bilayer graphene using angle-
resolved photoemission spectroscopy and ab initio calculations. We observe two …

Fundamental principles of mapping 3-dimensional quasiparticle dispersions in the valence
band using angle-resolved photoemission spectroscopy are discussed. Such mapping is …

In this work, we present a model of the surface states of nonsymmorphic semimetals. These
are derived from surface mass terms that lift the high degeneracy imposed on the band …

Interaction effects can change materials properties in intriguing ways, and they have, in
general, a huge impact on electronic spectra. In particular, satellites in photoemission …

We present angle-resolved photoemission spectroscopy measurements of the surface states
on in-situ grown (111) oriented films of Pb 1− x Sn x Se, a three-dimensional topological …