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Title: Nonequilibrium electron and lattice dynamics of strongly correlated Bi2Sr2CaCu2O8+δ single crystals

Abstract

Here, the interplay between the electronic and lattice degrees of freedom in nonequilibrium states of strongly correlated systems has been debated for decades. Although progress has been made in establishing a hierarchy of electronic interactions with the use of time-resolved techniques, the role of the phonons often remains in dispute, a situation highlighting the need for tools that directly probe the lattice. We present the first combined megaelectron volt ultrafast electron diffraction and time- and angle-resolved photoemission spectroscopy study of optimally doped Bi2Sr2CaCu2O8+δ. Quantitative analysis of the lattice and electron subsystems’ dynamics provides a unified picture of nonequilibrium electron-phonon interactions in the cuprates beyond the N-temperature model. The work provides new insights on the specific phonon branches involved in the nonequilibrium heat dissipation from the high-energy Cu–O bond stretching “hot” phonons to the lowest-energy acoustic phonons with correlated atomic motion along the <110> crystal directions and their characteristic time scales. It reveals a highly nonthermal phonon population during the first several picoseconds after the photoexcitation. The approach, taking advantage of the distinct nature of electrons and photons as probes, is applicable for studying energy relaxation in other strongly correlated electron systems.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [2];  [3]; ORCiD logo [3];  [2]; ORCiD logo [2]; ORCiD logo [5];  [5]; ORCiD logo [5]; ORCiD logo [6]; ORCiD logo [4];  [3]; ORCiD logo [5];  [2];  [3]; ORCiD logo [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States); Stony Brook Univ., Stony Brook, NY (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  4. North Carolina State Univ., Raleigh, NC (United States)
  5. Univ. Duisburg-Essen, Duisburg (Germany)
  6. Georgetown Univ., Washington, DC (United States)
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Center for Emergent Superconductivity (CES); Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1456902
Report Number(s):
BNL-205791-2018-JAAM
Journal ID: ISSN 2375-2548
Grant/Contract Number:  
SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Science Advances
Additional Journal Information:
Journal Volume: 4; Journal Issue: 4; Journal ID: ISSN 2375-2548
Publisher:
AAAS
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Konstantinova, Tatiana, Rameau, Jonathan D., Reid, Alexander H., Abdurazakov, Omadillo, Wu, Lijun, Li, Renkai, Shen, Xiaozhe, Gu, Genda, Huang, Yuan, Rettig, Laurenz, Avigo, Isabella, Ligges, Manuel, Freericks, James K., Kemper, Alexander F., Durr, Hermann A., Bovensiepen, Uwe, Johnson, Peter D., Wang, Xijie, and Zhu, Yimei. Nonequilibrium electron and lattice dynamics of strongly correlated Bi2Sr2CaCu2O8+δ single crystals. United States: N. p., 2018. Web. doi:10.1126/sciadv.aap7427.
Konstantinova, Tatiana, Rameau, Jonathan D., Reid, Alexander H., Abdurazakov, Omadillo, Wu, Lijun, Li, Renkai, Shen, Xiaozhe, Gu, Genda, Huang, Yuan, Rettig, Laurenz, Avigo, Isabella, Ligges, Manuel, Freericks, James K., Kemper, Alexander F., Durr, Hermann A., Bovensiepen, Uwe, Johnson, Peter D., Wang, Xijie, & Zhu, Yimei. Nonequilibrium electron and lattice dynamics of strongly correlated Bi2Sr2CaCu2O8+δ single crystals. United States. https://doi.org/10.1126/sciadv.aap7427
Konstantinova, Tatiana, Rameau, Jonathan D., Reid, Alexander H., Abdurazakov, Omadillo, Wu, Lijun, Li, Renkai, Shen, Xiaozhe, Gu, Genda, Huang, Yuan, Rettig, Laurenz, Avigo, Isabella, Ligges, Manuel, Freericks, James K., Kemper, Alexander F., Durr, Hermann A., Bovensiepen, Uwe, Johnson, Peter D., Wang, Xijie, and Zhu, Yimei. Fri . "Nonequilibrium electron and lattice dynamics of strongly correlated Bi2Sr2CaCu2O8+δ single crystals". United States. https://doi.org/10.1126/sciadv.aap7427. https://www.osti.gov/servlets/purl/1456902.
@article{osti_1456902,
title = {Nonequilibrium electron and lattice dynamics of strongly correlated Bi2Sr2CaCu2O8+δ single crystals},
author = {Konstantinova, Tatiana and Rameau, Jonathan D. and Reid, Alexander H. and Abdurazakov, Omadillo and Wu, Lijun and Li, Renkai and Shen, Xiaozhe and Gu, Genda and Huang, Yuan and Rettig, Laurenz and Avigo, Isabella and Ligges, Manuel and Freericks, James K. and Kemper, Alexander F. and Durr, Hermann A. and Bovensiepen, Uwe and Johnson, Peter D. and Wang, Xijie and Zhu, Yimei},
abstractNote = {Here, the interplay between the electronic and lattice degrees of freedom in nonequilibrium states of strongly correlated systems has been debated for decades. Although progress has been made in establishing a hierarchy of electronic interactions with the use of time-resolved techniques, the role of the phonons often remains in dispute, a situation highlighting the need for tools that directly probe the lattice. We present the first combined megaelectron volt ultrafast electron diffraction and time- and angle-resolved photoemission spectroscopy study of optimally doped Bi2Sr2CaCu2O8+δ. Quantitative analysis of the lattice and electron subsystems’ dynamics provides a unified picture of nonequilibrium electron-phonon interactions in the cuprates beyond the N-temperature model. The work provides new insights on the specific phonon branches involved in the nonequilibrium heat dissipation from the high-energy Cu–O bond stretching “hot” phonons to the lowest-energy acoustic phonons with correlated atomic motion along the <110> crystal directions and their characteristic time scales. It reveals a highly nonthermal phonon population during the first several picoseconds after the photoexcitation. The approach, taking advantage of the distinct nature of electrons and photons as probes, is applicable for studying energy relaxation in other strongly correlated electron systems.},
doi = {10.1126/sciadv.aap7427},
journal = {Science Advances},
number = 4,
volume = 4,
place = {United States},
year = {2018},
month = {4}
}

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