Tunable Van Hove Singularity without Structural Instability in Kagome Metal CsTi_{3}Bi_{5}.

Journal

Physical review letters
ISSN: 1079-7114
Titre abrégé: Phys Rev Lett
Pays: United States
ID NLM: 0401141

Informations de publication

Date de publication:
14 Jul 2023
Historique:
received: 12 12 2022
revised: 24 03 2023
accepted: 05 06 2023
medline: 28 7 2023
pubmed: 28 7 2023
entrez: 28 7 2023
Statut: ppublish

Résumé

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.

Identifiants

DOI: 10.1103/PhysRevLett.131.026701 PMID: 37505968
pubmed: 37505968
doi: 10.1103/PhysRevLett.131.026701
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

026701

Auteurs

Bo 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.

Min-Quan Kuang (MQ)

Chongqing Key Laboratory of Micro & Nano Structure Optoelectronics, and School of Physical Science and Technology, Southwest University, Chongqing 400715, China.

Yang 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.

Yongkai 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.
Beijing Key Lab of Nanophotonics and Ultrafine Optoelectronic Systems, Beijing Institute of Technology, Beijing 100081, China.

Cheng Hu (C)

Material Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.

Jiarui Liu (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.
Department of Physics and Astronomy, Clemson University, Clemson, South Carolina 29631, USA.

Qian Xiao (Q)

International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China.

Xiquan Zheng (X)

International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China.

Linwei Huai (L)

Department of Physics and CAS Key Laboratory of Strongly-coupled Quantum Matter Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.

Shuting Peng (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.

Zhiyuan 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.

Jianchang 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.

Bingqian 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.

Yu 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.

Xiupeng 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.

Zhipeng 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.

Shengtao Cui (S)

National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230026, China.

Zhe Sun (Z)

National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230026, China.

Makoto Hashimoto (M)

Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.

Donghui Lu (D)

Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.

Chris Jozwiak (C)

Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.

Aaron Bostwick (A)

Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.

Eli Rotenberg (E)

Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.

Luca Moreschini (L)

Material Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
Department of Physics, University of California, Berkeley, Berkeley, California 94720, USA.

Alessandra Lanzara (A)

Material Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
Department of Physics, University of California, Berkeley, Berkeley, California 94720, USA.

Yao Wang (Y)

Department of Physics and Astronomy, Clemson University, Clemson, South Carolina 29631, USA.

Yingying Peng (Y)

International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China.

Yugui Yao (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.
Beijing Key Lab of Nanophotonics and Ultrafine Optoelectronic Systems, Beijing Institute of Technology, Beijing 100081, China.

Zhiwei Wang (Z)

Centre for Quantum Physics, Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement (MOE), School of Physics, Beijing Institute of Technology, Beijing 100081, China.
Beijing Key Lab of Nanophotonics and Ultrafine Optoelectronic Systems, Beijing Institute of Technology, Beijing 100081, China.
Material Science Center, Yangtze Delta Region Academy of Beijing Institute of Technology, Jiaxing 314011, China.

Junfeng He (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.

Classifications MeSH