Publication Date:
2018-05-01
Description:
Author(s): S. Roth, H. Lee, A. Sterzi, M. Zacchigna, A. Politano, R. Sankar, F. C. Chou, G. Di Santo, L. Petaccia, O. V. Yazyev, and A. Crepaldi Cd 3 As 2 with its linearly dispersing bulk state is generally considered an archetype of the three-dimensional Dirac semimetal phase. The present investigation of its electronic properties calls for a revision of this crude assumption. Indeed, Cd 3 As 2 exhibits both a surface state and two bulk bands, dispersing across the Fermi level. Hence, all these states must contribute to the unique material electrical transport properties, but with very different effective masses, band velocities, and different binding energies with respect to the chemical potential. This results in possible ambipolar charge carrier transport at the surface. [Phys. Rev. B 97, 165439] Published Mon Apr 30, 2018
Keywords:
Surface physics, nanoscale physics, low-dimensional systems
Print ISSN:
1098-0121
Electronic ISSN:
1095-3795
Topics:
Physics
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