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Title: Giant phonon anomaly associated with superconducting fluctuations in the pseudogap phase of cuprates

Abstract

The pseudogap in underdoped cuprates leads to significant changes in the electronic structure, and was later found to be accompanied by anomalous fluctuations of superconductivity and certain lattice phonons. Here, in this paper, we propose that the Fermi surface breakup due to the pseudogap, leads to a breakup of the pairing order into two weakly coupled sub-band amplitudes, and a concomitant low energy Leggett mode due to phase fluctuations between them. This increases the temperature range of superconducting fluctuations containing an overdamped Leggett mode. In this range inter-sub-band phonons show strong damping due to resonant scattering into an intermediate state with a pair of overdamped Leggett modes. In the ordered state, the Leggett mode develops a finite energy, changing the anomalous phonon damping into an anomaly in the dispersion. In addition, this proposal explains the intrinsic connection between the anomalous pseudogap phase, enhanced superconducting fluctuations and giant anomalies in the phonon spectra.

Authors:
ORCiD logo [1];  [2];  [3];  [4]
  1. ETH Zurich, Zurich (Switzerland)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics
  3. ETH Zurich, Zurich (Switzerland); Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics
  4. Zhejiang Univ., Hangzhou (China).; Collaborative Innovation Center of Advanced Microstructures, Nanjing (China)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1258648
Alternate Identifier(s):
OSTI ID: 1335422
Report Number(s):
BNL-112042-2016-JA
Journal ID: ISSN 2041-1723; ncomms10378
Grant/Contract Number:  
AC02-98CH10886; 11274269; SC00112704
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 7; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Liu, Ye-Hua, Konik, Robert M., Rice, T. M., and Zhang, Fu-Chun. Giant phonon anomaly associated with superconducting fluctuations in the pseudogap phase of cuprates. United States: N. p., 2016. Web. https://doi.org/10.1038/ncomms10378.
Liu, Ye-Hua, Konik, Robert M., Rice, T. M., & Zhang, Fu-Chun. Giant phonon anomaly associated with superconducting fluctuations in the pseudogap phase of cuprates. United States. https://doi.org/10.1038/ncomms10378
Liu, Ye-Hua, Konik, Robert M., Rice, T. M., and Zhang, Fu-Chun. Wed . "Giant phonon anomaly associated with superconducting fluctuations in the pseudogap phase of cuprates". United States. https://doi.org/10.1038/ncomms10378. https://www.osti.gov/servlets/purl/1258648.
@article{osti_1258648,
title = {Giant phonon anomaly associated with superconducting fluctuations in the pseudogap phase of cuprates},
author = {Liu, Ye-Hua and Konik, Robert M. and Rice, T. M. and Zhang, Fu-Chun},
abstractNote = {The pseudogap in underdoped cuprates leads to significant changes in the electronic structure, and was later found to be accompanied by anomalous fluctuations of superconductivity and certain lattice phonons. Here, in this paper, we propose that the Fermi surface breakup due to the pseudogap, leads to a breakup of the pairing order into two weakly coupled sub-band amplitudes, and a concomitant low energy Leggett mode due to phase fluctuations between them. This increases the temperature range of superconducting fluctuations containing an overdamped Leggett mode. In this range inter-sub-band phonons show strong damping due to resonant scattering into an intermediate state with a pair of overdamped Leggett modes. In the ordered state, the Leggett mode develops a finite energy, changing the anomalous phonon damping into an anomaly in the dispersion. In addition, this proposal explains the intrinsic connection between the anomalous pseudogap phase, enhanced superconducting fluctuations and giant anomalies in the phonon spectra.},
doi = {10.1038/ncomms10378},
journal = {Nature Communications},
number = ,
volume = 7,
place = {United States},
year = {2016},
month = {1}
}

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Coexistence of Charge-Density-Wave and Pair-Density-Wave Orders in Underdoped Cuprates
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Weak-coupling phase diagram of the two-chain Hubbard model
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Reconstructed Fermi Surface of Underdoped Bi 2 Sr 2 CaCu 2 O 8 + δ Cuprate Superconductors
journal, July 2011


Number-Phase Fluctuations in Two-Band Superconductors
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Vortices and dissipation in a bilayer thin film superconductor
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Numerical study of charge transport of overdoped La 2 x Sr x CuO 4 within semiclassical Boltzmann transport theory
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  • DOI: 10.1007/BF01391528

Fluctuations in an impure unconventional superconductor
journal, February 1990


Theory of fluctuations in a two-band superconductor: MgB 2
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    Works referencing / citing this record:

    High-temperature charge density wave correlations in La 1.875 Ba 0.125 CuO 4 without spin–charge locking
    journal, November 2017

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