| Publication Type |
pre-print |
| School or College |
College of Engineering |
| Department |
Materials Science & Engineering |
| Creator |
Liu, Feng |
| Other Author |
Zhang, L. Z.; Wang, Z. F.; Du, S. X.; Gao, H.-J., |
| Title |
Prediction of a Dirac state in monolayer TiB2 |
| Date |
2014-01-01 |
| Description |
We predict the existence of a Dirac state in a monolayer TiB2 sheet (m-TiB2), a two-dimensionalmetal diboride, based on first-principles calculations. The band structure of m-TiB2 is found to be characterized with anisotropic Dirac cones with the largest Fermi velocity of 0.57 × 106 m/s, which is about one-half of that of graphene. The Dirac point is located at the Fermi level between the K and points, with the Dirac states arising primarily from the d orbitals of Ti. Freestanding m-TiB2 exhibits a bending instability, so that a planar m-TiB2 needs to be stabilized on a substrate. The calculation of m-TiB2 on a h-BN substrate reveals a negligible influence of the h-BN substrate on the electronic properties of m-TiB2. Our findings extend the Dirac materials to metal diborides. |
| Type |
Text |
| Publisher |
American Physical Society |
| Volume |
90 |
| Issue |
16 |
| First Page |
161402-1 |
| Last Page |
161402-5 |
| Language |
eng |
| Bibliographic Citation |
Zhang, L. Z., Wang, Z. F., Du, S. X., Gao, H.-J., & Liu, F. (2014). Prediction of a Dirac state in monolayer TiB2. Physical Review B - Condensed Matter and Materials Physics, 90(16), 161402-1-161402-5. |
| Rights Management |
(c) American Physical Society http://dx.doi.org/DOI: 10.1103/PhysRevB.90.161402. |
| Format Medium |
application/pdf |
| Format Extent |
1,511,383 bytes |
| Identifier |
uspace,19030 |
| ARK |
ark:/87278/s66148fc |
| Setname |
ir_uspace |
| ID |
712733 |
| Reference URL |
https://collections.lib.utah.edu/ark:/87278/s66148fc |
