188 citations · 692 across the 25 of their papers we have counts for
15 papers · 1 filter
Zeeman field-induced two-dimensional Weyl semimetal phase in cadmium arsenide
Binghao Guo, Wangqian Miao, Victor Huang +3
We report a topological phase transition in quantum-confined cadmium arsenide (Cd3As2) thin films under an in-plane Zeeman field when the Fermi level is tuned into the topological…
Two-dimensional topological insulator state in cadmium arsenide thin films
Alexander C. Lygo, Binghao Guo, Arman Rashidi +3
Two-dimensional topological insulators (2D TIs) are a highly desired quantum phase but few materials have demonstrated clear signatures of a 2D TI state. It has been predicted that…
Enhanced Dirac node separation in strained Cd3As2 topological semimetal
Gauthier Krizman, Joaquin Bermejo-Ortiz, Manik Goyal +7
In topological semimetals, nodes appear at symmetry points in the Brillouin zone as a result of band inversion, and yield quasi-relativistic massless fermions at low energies. Cd3A…
Topological surface states in strained Dirac semimetal thin films
Pablo Villar Arribi, Jian-Xin Zhu, Timo Schumann +3
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 CdA as a model system, and include pertu…
Determination of the crystal field splitting energy in Cd3As2 using magnetooptics
G. Krizman, T. Schumann, S. Tchoumakov +4
Symmetry considerations are of extreme importance to the topological properties of crystals. A crystal field splitting δ yields Dirac nodes near the Brillouin zone center in Cd3As2…
A Large Effective Phonon Magnetic Moment in a Dirac Semimetal
Bing Cheng, T. Schumann, Y. C. Wang +4
We investigated the magnetoterahertz response of the Dirac semimetal CdAs and observed a particularly low frequency optical phonon, as well as a very prominent and field se…