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Title: Selective hybridization between the main band and the superstructure band in the Bi 2 Sr 2 CaCu 2 O 8 + δ superconductor

Abstract

High-resolution laser-based angle-resolved photoemission measurements have been carried out on Bi2Sr2CaCu2O8+δ (Bi2212) and Bi2Sr2–xLaxCuO6+δ (Bi2201) superconductors. Unexpected hybridization between the main band and the superstructure band in Bi2212 is clearly revealed. In the momentum space where one main Fermi surface intersects with one superstructure Fermi surface, four bands are observed instead of two. The hybridization exists in both the superconducting state and the normal state, and in Bi2212 samples with different doping levels. Such a hybridization is not observed in Bi2201. This phenomenon can be understood by considering the bilayer splitting in Bi2212, the selective hybridization of two bands with peculiar combinations, and the altered matrix element effects of the hybridized bands. These observations indicate that the origin of the superstructure bands is intrinsic to the CuO2 planes. Furthermore, understanding physical properties and superconductivity in Bi2212 should consider the complete Fermi surface topology which involves the main bands, the superstructure bands, and their interactions.

Authors:
 [1];  [1];  [2];  [1];  [1];  [1];  [1];  [1];  [3];  [1];  [1]; ORCiD logo [3]; ORCiD logo [3];  [1];  [4];  [3];  [3];  [3];  [3];  [3] more »;  [3];  [5]; ORCiD logo [5] « less
  1. Chinese Academy of Sciences (CAS), Beijing (China); Univ. of Chinese Academy of Sciences, Beijing (China)
  2. Chinese Academy of Sciences (CAS), Beijing (China); Univ. of Chinese Academy of Sciences, Beijing (China); Beijing Academy of Quantum Information Sciences (China)
  3. Chinese Academy of Sciences (CAS), Beijing (China)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States)
  5. Chinese Academy of Sciences (CAS), Beijing (China); Univ. of Chinese Academy of Sciences, Beijing (China); Beijing Academy of Quantum Information Sciences (China); Songshan Lake Materials Lab., Guangdong (China)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation of China
OSTI Identifier:
1603292
Report Number(s):
BNL-213689-2020-JAAM
Journal ID: ISSN 2469-9950; PRBMDO
Grant/Contract Number:  
SC0012704; Y18G06; XDB25000000; 11888101; 2016YFA0300300; 2017YFA0302900)
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 101; Journal Issue: 1; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Femi surface; Superconductivity; High-temperature superconductors; Angle-resolved photoemission spectroscopy

Citation Formats

Gao, Qiang, Yan, Hongtao, Liu, Jing, Ai, Ping, Cai, Yongqing, Li, Cong, Luo, Xiangyu, Hu, Cheng, Song, Chunyao, Huang, Jianwei, Rong, Hongtao, Huang, Yuan, Wang, Qingyan, Liu, Guodong, Gu, Genda, Zhang, Fengfeng, Yang, Feng, Zhang, Shenjin, Peng, Qinjun, Xu, Zuyan, Zhao, Lin, Xiang, Tao, and Zhou, X. J. Selective hybridization between the main band and the superstructure band in the Bi2Sr2CaCu2O8+δ superconductor. United States: N. p., 2020. Web. https://doi.org/10.1103/PhysRevB.101.014513.
Gao, Qiang, Yan, Hongtao, Liu, Jing, Ai, Ping, Cai, Yongqing, Li, Cong, Luo, Xiangyu, Hu, Cheng, Song, Chunyao, Huang, Jianwei, Rong, Hongtao, Huang, Yuan, Wang, Qingyan, Liu, Guodong, Gu, Genda, Zhang, Fengfeng, Yang, Feng, Zhang, Shenjin, Peng, Qinjun, Xu, Zuyan, Zhao, Lin, Xiang, Tao, & Zhou, X. J. Selective hybridization between the main band and the superstructure band in the Bi2Sr2CaCu2O8+δ superconductor. United States. https://doi.org/10.1103/PhysRevB.101.014513
Gao, Qiang, Yan, Hongtao, Liu, Jing, Ai, Ping, Cai, Yongqing, Li, Cong, Luo, Xiangyu, Hu, Cheng, Song, Chunyao, Huang, Jianwei, Rong, Hongtao, Huang, Yuan, Wang, Qingyan, Liu, Guodong, Gu, Genda, Zhang, Fengfeng, Yang, Feng, Zhang, Shenjin, Peng, Qinjun, Xu, Zuyan, Zhao, Lin, Xiang, Tao, and Zhou, X. J. Wed . "Selective hybridization between the main band and the superstructure band in the Bi2Sr2CaCu2O8+δ superconductor". United States. https://doi.org/10.1103/PhysRevB.101.014513. https://www.osti.gov/servlets/purl/1603292.
@article{osti_1603292,
title = {Selective hybridization between the main band and the superstructure band in the Bi2Sr2CaCu2O8+δ superconductor},
author = {Gao, Qiang and Yan, Hongtao and Liu, Jing and Ai, Ping and Cai, Yongqing and Li, Cong and Luo, Xiangyu and Hu, Cheng and Song, Chunyao and Huang, Jianwei and Rong, Hongtao and Huang, Yuan and Wang, Qingyan and Liu, Guodong and Gu, Genda and Zhang, Fengfeng and Yang, Feng and Zhang, Shenjin and Peng, Qinjun and Xu, Zuyan and Zhao, Lin and Xiang, Tao and Zhou, X. J.},
abstractNote = {High-resolution laser-based angle-resolved photoemission measurements have been carried out on Bi2Sr2CaCu2O8+δ (Bi2212) and Bi2Sr2–xLaxCuO6+δ (Bi2201) superconductors. Unexpected hybridization between the main band and the superstructure band in Bi2212 is clearly revealed. In the momentum space where one main Fermi surface intersects with one superstructure Fermi surface, four bands are observed instead of two. The hybridization exists in both the superconducting state and the normal state, and in Bi2212 samples with different doping levels. Such a hybridization is not observed in Bi2201. This phenomenon can be understood by considering the bilayer splitting in Bi2212, the selective hybridization of two bands with peculiar combinations, and the altered matrix element effects of the hybridized bands. These observations indicate that the origin of the superstructure bands is intrinsic to the CuO2 planes. Furthermore, understanding physical properties and superconductivity in Bi2212 should consider the complete Fermi surface topology which involves the main bands, the superstructure bands, and their interactions.},
doi = {10.1103/PhysRevB.101.014513},
journal = {Physical Review B},
number = 1,
volume = 101,
place = {United States},
year = {2020},
month = {1}
}

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