期刊
APPLIED PHYSICS LETTERS
卷 98, 期 21, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3592834
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资金
- DFG [P 1.3-A, FOR 1464]
- Forschungszentrum Komplexe Materialien (COMATT, JGU Mainz)
Besides of their well-known wide range of properties it was recently shown that many of the heavy Heusler semiconductors with 1:1:1 composition and C1(b) structure exhibit a zero band gap behavior and are topological insulators induced by their inverted band structure. In the present study, the electronic structure of the Heusler compounds PtYSb and PtLaBi was investigated by bulk sensitive hard x-ray photoelectron spectroscopy. The measured valence band spectra are clearly resolved and in well agreement to the first-principles calculations of the electronic structure of the compounds. The experimental results give clear evidence for the zero band gap state. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3592834]
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