Photoemission Spectroscopy of Ta2NiSe5

被引：0
|
作者：
Y. Wakisaka
T. Sudayama
K. Takubo
T. Mizokawa
N. L. Saini
M. Arita
H. Namatame
M. Taniguchi
N. Katayama
M. Nohara
H. Takagi
机构：
[1] University of Tokyo,Department of Complex Science and Engineering and Department of Physics
[2] University of Rome,Department of Physics
[3] Hiroshima University,Hiroshima Synchrotron Radiation Center
[4] Hiroshima University,Graduate School of Science
[5] University of Tokyo,Department of Advanced Materials
来源：
Journal of Superconductivity and Novel Magnetism | 2012年 / 25卷
关键词：
Excitonic insulator; Layered chalcogenide; Photoemission;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We report temperature-dependent angle-resolved photoemission spectroscopy measurement of Ta2NiSe5 which shows a semiconductor-semiconductor structural phase transition at around 330 K. Characteristically, flat band at the top of the valence band is observed, which is ascribed to the excitonic insulator effect. The top valence band shifts to higher binding energy and its bandwidth increases as the temperature decreases.
引用
收藏
页码：1231 / 1234
页数：3
相关论文
共 50 条
  • [21] Examination of Nonlinear Conductivity on the Excitonic Insulator Candidate Ta2NiSe5
    Nakano, Akitoshi
    Maruoka, Urara
    Taniguchi, Hiroki
    Terasaki, Ichiro
    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2020, 89 (04)
  • [22] Exciton Transport in the Electron-Hole System Ta2NiSe5
    Nakano, Akitoshi
    Nagai, Takayuki
    Katayama, Naoyuki
    Sawa, Hiroshi
    Taniguchi, Hiroki
    Terasaki, Ichiro
    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2019, 88 (11)
  • [23] Electron Correlation in Ta 5d band of Ta2NiSe5 Deduced from Ta 4f Core-Level Photoemission Analysis
    Okada, Kozo
    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2023, 92 (07)
  • [24] Photo-excited dynamics in the excitonic insulator Ta2NiSe5
    Werdehausen, Daniel
    Takayama, Tomohiro
    Albrecht, Gelon
    Lu, Yangfan
    Takagi, Hidenori
    Kaiser, Stefan
    JOURNAL OF PHYSICS-CONDENSED MATTER, 2018, 30 (30)
  • [25] Electrical Tuning of the Excitonic Insulator Ground State of Ta2NiSe5
    Fukutani, Keisuke
    Stania, Roland
    Jung, Jiwon
    Schwier, Eike F.
    Shimada, Kenya
    Kwon, Chang Il
    Kim, Jun Sung
    Yeom, Han Woong
    PHYSICAL REVIEW LETTERS, 2019, 123 (20)
  • [26] Strong Coupling Nature of the Excitonic Insulator State in Ta2NiSe5
    Sugimoto, Koudai
    Nishimoto, Satoshi
    Kaneko, Tatsuya
    Ohta, Yukinori
    PHYSICAL REVIEW LETTERS, 2018, 120 (24)
  • [27] Charge and Lattice Dynamics in Excitonic Insulator Ta2NiSe5 Investigated Using Ultrafast Reflection Spectroscopy
    Miyamoto, Tatsuya
    Mizui, Makoto
    Takamura, Naoki
    Hirata, Junya
    Yamakawa, Hiromichi
    Morimoto, Takeshi
    Terashige, Tsubasa
    Kida, Noriaki
    Nakano, Akitoshi
    Sawa, Hiroshi
    Okamoto, Hiroshi
    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2022, 91 (02)
  • [28] Non-Coulomb strong electron-hole binding in Ta2NiSe5 revealed by time- and angle-resolved photoemission spectroscopy
    Tang, Tianwei
    Wang, Hongyuan
    Duan, Shafeng
    Yang, Yuanyuan
    Huang, Chaozhi
    Guo, Yanfeng
    Qian, Dong
    Zhang, Wentao
    PHYSICAL REVIEW B, 2020, 101 (23)
  • [29] Effects of thickness, temperature and substrate on phonon anisotropy in layered Ta2NiSe5
    Li, Si-Na
    Zhou, Jun-Jie
    Zhang, Jie-lian
    Yang, Si-Xian
    Chen, Mei-Fei
    Liu, Yue
    Li, Jing-Bo
    MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, 2024, 310
  • [30] Ta2NiSe5: A candidate topological excitonic insulator with multiple band inversions
    Ma, Xiaobo
    Wang, Guangwei
    Mao, Huican
    Yuan, Zhihong
    Yu, Tianye
    Liu, Rui
    Peng, Yiran
    Zheng, Pengyu
    Yin, Zhiping
    PHYSICAL REVIEW B, 2022, 105 (03)
12345