Asymmetric mass acquisition in LaBi - a new topological semimetal candidate
| العنوان: | Asymmetric mass acquisition in LaBi - a new topological semimetal candidate |
|---|---|
| المؤلفون: | Daixiang Mou, Lunan Huang, Adam Kaminski, Tai Kong, Yun Wu, Lin-Lin Wang, Paul C. Canfield, Benjamin Schrunk, Sergey L. Bud'ko, Duane D. Johnson |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | Physics, Surface (mathematics), Condensed Matter - Materials Science, Condensed matter physics, Photoemission spectroscopy, Band gap, Materials Science (cond-mat.mtrl-sci), FOS: Physical sciences, 02 engineering and technology, 021001 nanoscience & nanotechnology, Topology, 01 natural sciences, Spectral line, Semimetal, 0103 physical sciences, Dispersion (optics), Density functional theory, 010306 general physics, 0210 nano-technology, Tunable laser |
| الوصف: | We use our high resolution He-lamp based, tunable laser-based ARPES measurements and density functional theory calculations to study the electronic properties of LaBi, a binary system that was proposed to be a member of a new family of topological semimetals. Both bulk and surface bands are present in the spectra. The dispersion of the surface state is highly unusual. It resembles a Dirac cone, but upon closer inspection we can clearly detect an energy gap. The bottom band follows roughly a parabolic dispersion. The dispersion of the top band remains very linear, "V" shape like, with the tip approaching very closely to the extrapolated location of Dirac point. Such asymmetric mass acquisition is highly unusual and opens a possibility of a new topological phenomena that has yet to be understood. 14 pages 4 figures |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c20bb66b40c92da7d05e060eede6f6a2 http://arxiv.org/abs/1604.08945 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....c20bb66b40c92da7d05e060eede6f6a2 |
| قاعدة البيانات: | OpenAIRE |
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