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Tunable Van Hove Singularity without Structural Instability in Kagome Metal CsTi_{3}Bi_{5}.
Liu, Bo; Kuang, Min-Quan; Luo, Yang; Li, Yongkai; Hu, Cheng; Liu, Jiarui; Xiao, Qian; Zheng, Xiquan; Huai, Linwei; Peng, Shuting; Wei, Zhiyuan; Shen, Jianchang; Wang, Bingqian; Miao, Yu; Sun, Xiupeng; Ou, Zhipeng; Cui, Shengtao; Sun, Zhe; Hashimoto, Makoto; Lu, Donghui; Jozwiak, Chris; Bostwick, Aaron; Rotenberg, Eli; Moreschini, Luca; Lanzara, Alessandra; Wang, Yao; Peng, Yingying; Yao, Yugui; Wang, Zhiwei; He, Junfeng.
Afiliação
  • Liu B; Department of Physics and CAS Key Laboratory of Strongly-coupled Quantum Matter Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Kuang MQ; Chongqing Key Laboratory of Micro & Nano Structure Optoelectronics, and School of Physical Science and Technology, Southwest University, Chongqing 400715, China.
  • Luo Y; Department of Physics and CAS Key Laboratory of Strongly-coupled Quantum Matter Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Li Y; Centre for Quantum Physics, Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement (MOE), School of Physics, Beijing Institute of Technology, Beijing 100081, China.
  • Hu C; Beijing Key Lab of Nanophotonics and Ultrafine Optoelectronic Systems, Beijing Institute of Technology, Beijing 100081, China.
  • Liu J; Material Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
  • Xiao Q; Department of Physics and CAS Key Laboratory of Strongly-coupled Quantum Matter Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Zheng X; Department of Physics and Astronomy, Clemson University, Clemson, South Carolina 29631, USA.
  • Huai L; International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China.
  • Peng S; International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China.
  • Wei Z; Department of Physics and CAS Key Laboratory of Strongly-coupled Quantum Matter Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Shen J; Department of Physics and CAS Key Laboratory of Strongly-coupled Quantum Matter Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Wang B; Department of Physics and CAS Key Laboratory of Strongly-coupled Quantum Matter Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Miao Y; Department of Physics and CAS Key Laboratory of Strongly-coupled Quantum Matter Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Sun X; Department of Physics and CAS Key Laboratory of Strongly-coupled Quantum Matter Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Ou Z; Department of Physics and CAS Key Laboratory of Strongly-coupled Quantum Matter Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Cui S; Department of Physics and CAS Key Laboratory of Strongly-coupled Quantum Matter Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Sun Z; Department of Physics and CAS Key Laboratory of Strongly-coupled Quantum Matter Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Hashimoto M; National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Lu D; National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Jozwiak C; Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
  • Bostwick A; Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
  • Rotenberg E; Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
  • Moreschini L; Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
  • Lanzara A; Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
  • Wang Y; Material Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
  • Peng Y; Department of Physics, University of California, Berkeley, Berkeley, California 94720, USA.
  • Yao Y; Material Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
  • Wang Z; Department of Physics, University of California, Berkeley, Berkeley, California 94720, USA.
  • He J; Department of Physics and Astronomy, Clemson University, Clemson, South Carolina 29631, USA.
Phys Rev Lett ; 131(2): 026701, 2023 Jul 14.
Article em En | MEDLINE | ID: mdl-37505968
ABSTRACT
In kagome metal CsV_{3}Sb_{5}, multiple intertwined orders are accompanied by both electronic and structural instabilities. These exotic orders have attracted much recent attention, but their origins remain elusive. The newly discovered CsTi_{3}Bi_{5} is a Ti-based kagome metal to parallel CsV_{3}Sb_{5}. Here, we report angle-resolved photoemission experiments and first-principles calculations on pristine and Cs-doped CsTi_{3}Bi_{5} samples. Our results reveal that the van Hove singularity (vHS) in CsTi_{3}Bi_{5} can be tuned in a large energy range without structural instability, different from that in CsV_{3}Sb_{5}. As such, CsTi_{3}Bi_{5} provides a complementary platform to disentangle and investigate the electronic instability with a tunable vHS in kagome metals.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2023 Tipo de documento: Article
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2023 Tipo de documento: Article