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Nontrivial Berry phase and type-II Dirac transport in the layered material PdTe2.
- Source :
-
Physical Review B . 7/22/2017, Vol. 96 Issue 4, p1-1. 1p. - Publication Year :
- 2017
-
Abstract
- We report on a systematic study of type-II Dirac fermions in a layered crystal of PdTe2. De Haas-van Alphen oscillations show a small Fermi-surface pocket with a cross section of 0.077nm-2 with a nontrivial Berry phase. First-principles calculation reveals that the nontrivial Berry phase originates from a hole pocket formed by the tilted Dirac cone. In addition, the band dispersion measured with angle-resolved photoemission spectroscopy is found to be consistent with that of a type-II Dirac cone dispersion. We propose that PdTe2 is an improved platform to host topological superconductors. [ABSTRACT FROM AUTHOR]
- Subjects :
- *PALLADIUM compounds
*FERMIONS
*GEOMETRIC quantum phases
Subjects
Details
- Language :
- English
- ISSN :
- 24699950
- Volume :
- 96
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Physical Review B
- Publication Type :
- Academic Journal
- Accession number :
- 124521941
- Full Text :
- https://doi.org/10.1103/PhysRevB.96.041201