188 citations · 361 across the 6 of their papers we have counts for
6 papers
Basal-plane growth of cadmium arsenide by molecular beam epitaxy
David A. Kealhofer, Honggyu Kim, Timo Schumann +3
(001)-oriented thin films of the three-dimensional Dirac semimetal cadmium arsenide can realize a quantum spin Hall insulator and other kinds of topological physics, all within the…
Absence of signatures of Weyl orbits in the thickness dependence of quantum transport in cadmium arsenide
Luca Galletti, Timo Schumann, David A. Kealhofer +2
In a Weyl orbit, the Fermi arc surface states on opposite surfaces of the topological semimetal are connected through the bulk Weyl or Dirac nodes. Having a real-space component, t…
Two-Dimensional Dirac Fermions in Thin Films of Cd3As2
Luca Galletti, Timo Schumann, Omor F. Shoron +4
Two-dimensional states in confined thin films of the three-dimensional Dirac semimetal Cd3As2 are probed by transport and capacitance measurements under applied magnetic and electr…
Observation of the quantum Hall effect in confined films of the three-dimensional Dirac semimetal Cd3As2
Timo Schumann, Luca Galletti, David A. Kealhofer +3
The magnetotransport properties of epitaxial films of Cd3As2, a paradigm three-dimensional Dirac semimetal, are investigated. We show that an energy gap opens in the bulk electroni…
Negative magnetoresistance due to conductivity fluctuations in films of the topological semimetal Cd3As2
Timo Schumann, Manik Goyal, David A. Kealhofer +1
Recently discovered Dirac and Weyl semimetals display unusual magnetoresistance phenomena, including a large, non-saturating, linear transverse magnetoresistance and a negative lon…
Measurement of 7p-state hyperfine structure and 7s-7p transition isotope shift in Tl and Tl
G. Ranjit, D. Kealhofer, G. D. Vukasin +1
A two-step, two-color laser spectroscopy technique has been used to measure the hyperfine splitting of the 7p excited state in Tl and Tl, as well as the iso…