Can I read Topological surface states in strained Dirac semimetal thin films on EtoBox?

Topological surface states in strained Dirac semimetal thin films by Arribi, Pablo Villar; Zhu, Jian-Xin; Schumann, Timo; Stemmer, Susanne; Burkov, Anton A.; Heinonen, Olle is a scholarly article available to read on EtoBox.

What is Topological surface states in strained Dirac semimetal thin films about?

We computationally study the Fermi arc states in a Dirac semimetal, both in a semi-infinite slab and in the thin-film limit. We use Cd$_3$A$_2$ as a model system, and include perturbations that break the $C_4$ symmetry and inversion symmetry. The surface states are protected by the mirror symmetries present in the bulk states and thus survive these perturbations. The Fermi arc states persist down to very thin films, thinner than presently measured experimentally, but are affected by breaking the symmetry of the Hamiltonian. Our findings are compatible with experimental observations of transport in Cd$_3$As$_2$, and also suggest that symmetry-breaking terms that preserve the Fermi arc states nevertheless can have a profound effect in the thin film limit.

Author

Arribi, Pablo Villar; Zhu, Jian-Xin; Schumann, Timo; Stemmer, Susanne; Burkov, Anton A.; Heinonen, Olle

Published

2020

Language

EN