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Title: Multiorbital charge-density wave excitations and concomitant phonon anomalies in Bi2Sr2LaCuO6+δ

Abstract

Charge-density waves (CDWs) are ubiquitous in underdoped cuprate superconductors. As a modulation of the valence electron density, CDWs in hole-doped cuprates possess both Cu-3d and O-2p orbital character owing to the strong hybridization of these orbitals near the Fermi level. Here, we investigate underdoped Bi2Sr1.4La0.6CuO6+δ using resonant inelastic X-ray scattering (RIXS) and find that a short-range CDW exists at both Cu and O sublattices in the copper-oxide (CuO2) planes with a comparable periodicity and correlation length. Furthermore, we uncover bond-stretching and bond-buckling phonon anomalies concomitant to the CDWs. Comparing to slightly overdoped Bi2Sr1.8La0.2CuO6+δ, where neither CDWs nor phonon anomalies appear, we highlight that a sharp intensity anomaly is induced in the proximity of the CDW wavevector (QCDW) for the bond-buckling phonon, in concert with the diffused intensity enhancement of the bond-stretching phonon at wavevectors much greater than QCDW. Our results provide a comprehensive picture of the quasistatic CDWs, their dispersive excitations, and associated electron-phonon anomalies, which are key for understanding the competing electronic instabilities in cuprates.

Authors:
 [1];  [2];  [3];  [4];  [2];  [2];  [5]; ORCiD logo [5];  [6];  [7];  [8]; ORCiD logo [2]
+ Show Author Affiliations
  1. Diamond Light Source, Didcot (United Kingdom); Chinese Academy of Sciences (CAS), Beijing (China)
  2. Diamond Light Source, Didcot (United Kingdom)
  3. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
  4. Diamond Light Source, Didcot (United Kingdom); Univ. of Bristol (United Kingdom)
  5. National Institute of Advanced Industrial Science and Technology (AIST), Ibaraki (Japan)
  6. Chinese Academy of Sciences (CAS), Beijing (China)
  7. Univ. of Tennessee, Knoxville, TN (United States)
  8. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Natural Science Foundation of China (NSFC); Ministry of Science and Technology of China; National Science Foundation (NSF)
OSTI Identifier:
1823626
Report Number(s):
BNL-222115-2021-JAAM
Journal ID: ISSN 0027-8424
Grant/Contract Number:  
SC0012704; 11888101; 2016YFA0401000; DMR-1842056
Resource Type:
Accepted Manuscript
Journal Name:
Proceedings of the National Academy of Sciences of the United States of America
Additional Journal Information:
Journal Volume: 117; Journal Issue: 28; Journal ID: ISSN 0027-8424
Publisher:
National Academy of Sciences
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; charge-density waves; resonant inelastic X-ray scattering; phonon anomaly; high-temperature superconducting cuprates

Citation Formats

Li, Jiemin, Nag, Abhishek, Pelliciari, Jonathan, Robarts, Hannah, Walters, Andrew, Garcia-Fernandez, Mirian, Eisaki, Hiroshi, Song, Dongjoon, Ding, Hong, Johnston, Steven, Comin, Riccardo, and Zhou, Ke-Jin. Multiorbital charge-density wave excitations and concomitant phonon anomalies in Bi2Sr2LaCuO6+δ. United States: N. p., 2020. Web. doi:10.1073/pnas.2001755117.
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Li, Jiemin, Nag, Abhishek, Pelliciari, Jonathan, Robarts, Hannah, Walters, Andrew, Garcia-Fernandez, Mirian, Eisaki, Hiroshi, Song, Dongjoon, Ding, Hong, Johnston, Steven, Comin, Riccardo, & Zhou, Ke-Jin. Multiorbital charge-density wave excitations and concomitant phonon anomalies in Bi2Sr2LaCuO6+δ. United States. https://doi.org/10.1073/pnas.2001755117
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Li, Jiemin, Nag, Abhishek, Pelliciari, Jonathan, Robarts, Hannah, Walters, Andrew, Garcia-Fernandez, Mirian, Eisaki, Hiroshi, Song, Dongjoon, Ding, Hong, Johnston, Steven, Comin, Riccardo, and Zhou, Ke-Jin. Thu . "Multiorbital charge-density wave excitations and concomitant phonon anomalies in Bi2Sr2LaCuO6+δ". United States. https://doi.org/10.1073/pnas.2001755117. https://www.osti.gov/servlets/purl/1823626.
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@article{osti_1823626,
title = {Multiorbital charge-density wave excitations and concomitant phonon anomalies in Bi2Sr2LaCuO6+δ},
author = {Li, Jiemin and Nag, Abhishek and Pelliciari, Jonathan and Robarts, Hannah and Walters, Andrew and Garcia-Fernandez, Mirian and Eisaki, Hiroshi and Song, Dongjoon and Ding, Hong and Johnston, Steven and Comin, Riccardo and Zhou, Ke-Jin},
abstractNote = {Charge-density waves (CDWs) are ubiquitous in underdoped cuprate superconductors. As a modulation of the valence electron density, CDWs in hole-doped cuprates possess both Cu-3d and O-2p orbital character owing to the strong hybridization of these orbitals near the Fermi level. Here, we investigate underdoped Bi2Sr1.4La0.6CuO6+δ using resonant inelastic X-ray scattering (RIXS) and find that a short-range CDW exists at both Cu and O sublattices in the copper-oxide (CuO2) planes with a comparable periodicity and correlation length. Furthermore, we uncover bond-stretching and bond-buckling phonon anomalies concomitant to the CDWs. Comparing to slightly overdoped Bi2Sr1.8La0.2CuO6+δ, where neither CDWs nor phonon anomalies appear, we highlight that a sharp intensity anomaly is induced in the proximity of the CDW wavevector (QCDW) for the bond-buckling phonon, in concert with the diffused intensity enhancement of the bond-stretching phonon at wavevectors much greater than QCDW. Our results provide a comprehensive picture of the quasistatic CDWs, their dispersive excitations, and associated electron-phonon anomalies, which are key for understanding the competing electronic instabilities in cuprates.},
doi = {10.1073/pnas.2001755117},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
number = 28,
volume = 117,
place = {United States},
year = {Thu Jun 25 00:00:00 EDT 2020},
month = {Thu Jun 25 00:00:00 EDT 2020}
}
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https://doi.org/10.1073/pnas.2001755117
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