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Dynamics of correlation-frozen antinodal quasiparticles in superconducting cuprates

Journal Article · · Science Advances
 [1];  [2];  [2];  [3];  [4];  [5];  [6];  [7];  [7];  [7];  [8];  [9];  [6];  [10];  [6];  [11];  [3];  [12]
  1. Elettra-Sincrotrone Trieste, Basovizza (Italy); DOE/OSTI
  2. Elettra-Sincrotrone Trieste, Basovizza (Italy); Univ. degli Studi di Trieste (Italy). Dipartimento di Fisica
  3. Univ. Cattolica del Sacro Cuore, Brescia (Italy). Interdisciplinary Labs. for Advanced Materials Physics
  4. Univ. Cattolica del Sacro Cuore, Brescia (Italy). Interdisciplinary Labs. for Advanced Materials Physics; Katholieke Univ. Leuven, Heverlee (Belgium). Dept. of Physics and Astronomy
  5. Ecole Polytechnique Federale Lausanne (Switzlerland). Inst. of Physics
  6. Univ. of British Columbia, Vancouver, BC (Canada). Dept. of Physics and Astronomy; Univ. of British Columbia, Vancouver, BC (Canada). Quantum Matter Inst.
  7. Harwell Science and Innovation Campus, Didcot (United Kingdom). CLF-Artemis@Rutherford Appleton Lab.
  8. National Inst. of Advanced Industrial Science and Technology (AIST), Tsukuba (Japan). Nanoelectronics Research Inst.
  9. Univ. of Minnesota, Minneapolis, MN (United States). School of Physics and Astronomy
  10. North Carolina State Univ., Raleigh, NC (United States). Dept. of Physics
  11. National Simulation Center, Trieste (Italy). Scuola Internazionale Superiore di Studi Avanzati (SISSA) and Consiglio Nazionale delle Ricerche–Istituto Officina dei Materiali (CNR-IOM) Democritos
  12. Elettra-Sincrotrone Trieste, Basovizza (Italy); Univ. degli Studi di Trieste (Italy). Dipartimento di Fisica; Univ. of Cologne (Germany). International Faculty
Many puzzling properties of high–critical temperature (Tc) superconducting (HTSC) copper oxides have deep roots in the nature of the antinodal quasiparticles, the elementary excitations with wave vector parallel to the Cu–O bonds. These electronic states are most affected by the onset of antiferromagnetic correlations and charge instabilities, and they host the maximum of the anisotropic superconducting gap and pseudogap. We use time-resolved extremeultraviolet photoemission with proper photon energy (18 eV) and time resolution (50 fs) to disclose the ultrafast dynamics of the antinodal states in a prototypical HTSC cuprate. After photoinducing a nonthermal charge redistribution within the Cu and O orbitals, we reveal a dramatic momentum-space differentiation of the transient electron dynamics. Whereas the nodal quasiparticle distribution is heated up as in a conventional metal, new quasiparticle states transiently emerge at the antinodes, similarly to what is expected for a photoexcited Mott insulator, where the frozen charges can be released by an impulsive excitation. This transient antinodal metallicity is mapped into the dynamics of the O-2p bands, thus directly demonstrating the intertwining between the lowand high-energy scales that is typical of correlated materials. Our results suggest that the correlation-driven freezing of the electrons moving along the Cu–O bonds, analogous to the Mott localization mechanism, constitutes the starting point for any model of high-Tc superconductivity and other exotic phases of HTSC cuprates.
Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
Alfred P. Sloan; Canada First Research Excellence Fund (CFREF); Canada Foundation for Innovation (CFI); Canada Research Chairs Program; European Union’s Horizon 2020; Killam; LASERLAB-EUROPE; Natural Sciences and Engineering Research Council of Canada (NSERC); Swiss National Science Foundation (SNF); USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1625984
Journal Information:
Science Advances, Journal Name: Science Advances Journal Issue: 2 Vol. 4; ISSN 2375-2548
Publisher:
AAASCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (11)

Ultrafast orbital manipulation and Mott physics in multi-band correlated materials conference February 2018
Properties of the Electronic Fluid of Superconducting Cuprates from 63Cu NMR Shift and Relaxation journal June 2019
A setup for extreme-ultraviolet ultrafast angle-resolved photoelectron spectroscopy at 50-kHz repetition rate journal February 2019
Cavity-enhanced high harmonic generation for extreme ultraviolet time- and angle-resolved photoemission spectroscopy journal August 2019
Dynamics of photodoped charge transfer insulators journal July 2019
Multiband nonequilibrium G W + EDMFT formalism for correlated insulators journal December 2019
Unusual behavior of cuprates explained by heterogeneous charge localization journal January 2019
Direct determination of mode-projected electron-phonon coupling in the time domain journal December 2019
Properties of the electronic fluid of superconducting cuprates from $^{63}$Cu NMR shift and relaxation preprint January 2018
Dynamics of photo-doped charge transfer insulators text January 2018
Direct determination of mode-projected electron-phonon coupling in the time-domain text January 2019

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