Valence band momentum imaging of NiTe2 by two-photon photoemission momentum microscopy
Two-photon photoemission (2PPE) spectroscopy on NiTe2 is performed by the combination of femtosecond ultraviolet laser pulses with time-of-flight photoelectron momentum microscopy. At the photon energies of 2.9 and 3.1 eV, the bulk Te 5pz valence bands as well as the spin–orbit split Te 5px,y valence bands are identified. Detailed momentum patterns of the Te 5px,y bands are revealed, and the size of their splitting is estimated as 0.5−0.1+0.2 eV. Our 2PPE experiments on NiTe2 would open up the opportunities for future time-resolved studies of its unoccupied electronic states.
Authors
- Ming-Chiang Chung (ORCID: https://orcid.org/0000-0002-8538-0422)
- Prabesh Bista (ORCID: https://orcid.org/0000-0002-6910-4620)
- C. S. Lue (ORCID: https://orcid.org/0000-0002-3074-9253)
- Chen‐Bin Huang (ORCID: https://orcid.org/0000-0002-5824-3318)
- Yu-Chan Lin
- Cheng‐Tien Chiang (ORCID: https://orcid.org/0000-0003-4605-3207)
- Maximilian Paleschke
- M. Sanjoy Singh
- Chia‐Nung Kuo
- Yu-Jhen Chuang
Institutions
- National Sun Yat-sen University (TW)
- National Chung Hsing University (TW)
- National Taiwan University (TW)
- National Central University (TW)
- National Tsing Hua University (TW)
- Research Center for Applied Science, Academia Sinica (TW)
- National Center for Theoretical Sciences (TW)
- National Science and Technology Council (TW)
- Institute of Atomic and Molecular Sciences, Academia Sinica (TW)
- Institute of Molecular Biology, Academia Sinica (TW)
- National Institutes of Applied Research (TW)
- National Cheng Kung University (TW)
- National Taipei University (TW)
Publication Details
- Journal
- Applied Physics Letters
- Published
- 2026-01-19
- DOI
- https://doi.org/10.1063/5.0300775
- Primary Topic
- Laser Material Processing Techniques
- Type
- article
- Field-Weighted Citation Impact
- 0.00