Abstract
We report quantum transport and Dirac fermions in YbMnBi2 single crystals. YbMnBi2 is a layered material with anisotropic conductivity and magnetic order below 290 K. Magnetotransport properties, nonzero Berry phase, and small cyclotron mass indicate the presence of Dirac fermions. Angular-dependent magnetoresistance indicates a possible quasi-two-dimensional Fermi surface, whereas the deviation from the nontrivial Berry phase expected for Dirac states suggests the contribution of parabolic bands at the Fermi level or spin-orbit coupling.
| Original language | English |
|---|---|
| Article number | 165161 |
| Journal | Physical Review B |
| Volume | 94 |
| Issue number | 16 |
| DOIs | |
| State | Published - Oct 24 2016 |
Funding
Work at BNL was supported by the U.S. Department of Energy-BES, Division of Materials Science and Engineering, under Contract No. DE-SC0012704. Work at the National High Magnetic Field Laboratory is supported by the NSF Cooperative Agreement No. DMR-0654118, and by the state of Florida. Work at the Oak Ridge National Laboratory was sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy. X-ray scattering data were collected at the 28-ID-C x-ray powder diffraction beam line at National Synchrotron Light Source II at Brookhaven National Laboratory.
| Funders | Funder number |
|---|---|
| Scientific User Facilities Division | |
| National Science Foundation | DMR-0654118 |
| U.S. Department of Energy | |
| Basic Energy Sciences | |
| Division of Materials Sciences and Engineering | DE-SC0012704 |