120 citations · 623 across the 15 of their papers we have counts for
15 papers
Magneto-optical Signatures of Volkov-Pankratov States in Topological Insulators
X. Lu, M. O. Goerbig
In addition to the usual chiral surface states, massive surface states can arise at a smooth interface between a topological and a trivial bulk insulator. While not subject to topo…
Volkov-Pankratov states in topological heterojunctions
S. Tchoumakov, V. Jouffrey, A. Inhofer +4
We show that a smooth interface between two insulators of opposite topological Z2 indices possesses multiple surface states, both massless and massive. While the massless surface s…
Magneto-optical signature of massless Kane electrons in Cd3As2
A. Akrap, M. Hakl, S. Tchoumakov +21
We report on optical reflectivity experiments performed on Cd3As2 over a broad range of photon energies and magnetic fields. The observed response clearly indicates the presence of…
SU(4) Skyrmions in the Quantum Hall State of Graphene
Yunlong Lian, Achim Rosch, Mark O. Goerbig
We explore different skyrmion types in the lowest Landau level of graphene at a filling factor . In addition to the formation of spin and valley pseudospin skyrmions, we s…
Measurement of Topological Berry Phase in Highly Disordered Graphene
K. Bennaceur, J. Guillemette, P. L. Lévesque +12
We have observed the quantum Hall effect (QHE) and Shubnikov-de Haas (SdH) oscillations in highly disordered graphene at magnetic fields up to 65 T. Disorder was introduced by hydr…
Measure of Diracness in two-dimensional semiconductors
M. O. Goerbig, G. Montambaux, F. Piéchon
We analyze the low-energy properties of two-dimensional direct-gap semiconductors, such as for example the transition-metal dichalcogenides MoS, WS, and their diselenide an…