Applied Physics Letters

Valence band momentum imaging of NiTe2 by two-photon photoemission momentum microscopy

M Mukesh Singh P Prabesh Bista (Institute of Atomic and Molecular Sciences, Academia Sinica 1 , Taipei,) Y Yu-Chan Lin (Institute of Atomic and Molecular Sciences, Academia Sinica 1 , Taipei,) C Chia-Nung Kuo Y Yu-Jhen Chuang (Institute of Atomic and Molecular Sciences, Academia Sinica 1 , Taipei,) M Maximilian Paleschke (Institute of Atomic and Molecular Sciences, Academia Sinica 1 , Taipei,) C Chen-Bin Huang (Institute of Photonics Technologies, National Tsing Hua University 7 , Hsinchu,) M Ming-Chiang Chung (Department of Physics, National Chung Hsing University 9 , Taichung,) C Chin Shan Lue C Cheng-Tien Chiang (Institute of Atomic and Molecular Sciences, Academia Sinica 1 , Taipei,)

Abstract

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.

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Article Details

Volume / Issue Vol. 128, Issue 3
Published January 19, 2026
ISSN 0003-6951
Publisher American Institute of Physics

Journal Info

Applied Physics Letters

American Institute of Physics
ISSN: 0003-6951 Physical Sciences

Authors (10)

M

Mukesh Singh

P

Prabesh Bista

Institute of Atomic and Molecular Sciences, Academia Sinica 1 , Taipei,

Y

Yu-Chan Lin

Institute of Atomic and Molecular Sciences, Academia Sinica 1 , Taipei,

C

Chia-Nung Kuo

Y

Yu-Jhen Chuang

Institute of Atomic and Molecular Sciences, Academia Sinica 1 , Taipei,

M

Maximilian Paleschke

Institute of Atomic and Molecular Sciences, Academia Sinica 1 , Taipei,

C

Chen-Bin Huang

Institute of Photonics Technologies, National Tsing Hua University 7 , Hsinchu,

M

Ming-Chiang Chung

Department of Physics, National Chung Hsing University 9 , Taichung,

C

Chin Shan Lue

C

Cheng-Tien Chiang

Institute of Atomic and Molecular Sciences, Academia Sinica 1 , Taipei,

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