Abstract
We present an investigation of the electronic structure of single crystals using high-resolution angle-resolved photoemission spectroscopy utilizing tunable photon energy excitation. The typical semimetal-like electronic structure is observed and examined, where multiple hole pockets related to bands and one-electron pockets related to Ti bands are populated by carriers. The obtained results reveal (i) a pronounced three-dimensional (3D) electronic band structure of with typical semi-metallic features for both the Ti and the states; (ii) multiple Fermi surface sheets and complex band structure; and (iii) an obvious kink in the dispersion at an energy of about 18 meV below the Fermi energy, which is an experimental observation of the kink structure in single crystal. We find that this kink is induced by electron-phonon coupling in the material. These important and significant findings can help us to gain an in-depth understanding of the 3D electronic structure of semimetallic .
- Received 27 August 2018
- Revised 20 February 2019
- Corrected 8 April 2019
DOI:https://doi.org/10.1103/PhysRevB.99.125112
©2019 American Physical Society
Physics Subject Headings (PhySH)
Corrections
8 April 2019
Correction: Figure 2(b) was processed improperly during the initial production cycle and has been fixed.