Anomalous thermal expansion in $α$-titanium
| dc.creator | Souvatzis, P. | |
| dc.creator | Eriksson, O. | |
| dc.creator | Katsnelson, M. I. | |
| dc.date | 2007-07-15 | |
| dc.date.accessioned | 2026-07-07T08:18:30Z | |
| dc.date.available | 2026-07-07T08:18:30Z | |
| dc.description | We provide a complete quantitative explanation for the anisotropic thermal expansion of hcp Ti at low temperature. The observed negative thermal expansion along the c-axis is reproduced theoretically by means of a parameter free theory which involves both the electron and phonon contributions to the free energy. The thermal expansion of titanium is calculated and found to be negative along the c-axis for temperatures below $\sim$ 170 K, in good agreement with observations. We have identified a saddle-point Van Hove singularity near the Fermi level as the main reason for the anisotropic thermal expansion in $α-$titanium. | |
| dc.description | article, 4 pages, 3 figures | |
| dc.identifier | https://arxiv.org/abs/0707.2214 | |
| dc.identifier | http://arxiv.org/abs/0707.2214 | |
| dc.identifier | Phys. Rev. Lett. 99, 015901 (2007) | |
| dc.identifier | doi:10.1103/PhysRevLett.99.015901 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/134452 | |
| dc.subject | Materials Science | |
| dc.title | Anomalous thermal expansion in $α$-titanium | |
| dc.type | text |