1. Observation of surface Dirac state in transition metal dichalcogenide NiTe2 using ARPES.
- Author
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Kar, Indrani, Harnagea, Luminita, Banik, Soma, SurjeetSingh, Thirupathaiah, Setti, Sharma, Veerendra K., Prajapat, C. L., and Yusuf, S. M.
- Subjects
TRANSITION metals ,SURFACE states ,PHOTOELECTRON spectroscopy ,ELECTRONIC structure ,SINGLE crystals ,BINDING energy - Abstract
Using angle resolved photoemission spectroscopy (ARPES) we studied the low energy electronic structure of transition metal dichalcogenide (TMDC), NiTe
2 , single crystal. Our ARPES data clearly show a surface Dirac point observed at a binding energy of 1.45 eV which is consistent with an earlier prediction. Thus, our results for the first time experimentally prove that NiTe2 is a topological TMDC. Our ARPES data further suggest a metallic nature of NiTe2 . We found that overall the electronic structure of NiTe2 has similarities with the other topological TMDCs like PdTe2 , PtTe2 and PtSe2 . [ABSTRACT FROM AUTHOR]- Published
- 2020
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