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Title: Coherent organization of electronic correlations as a mechanism to enhance and stabilize high-T C cuprate superconductivity

Abstract

Strong diffusive or incoherent electronic correlations are the signature of the strange-metal normal state of the cuprate superconductors, with these correlations considered to be undressed or removed in the superconducting state. A critical question is if these correlations are responsible for the high-temperature superconductivity. Here, utilizing a development in the analysis of angle-resolved photoemission data, we show that the strange-metal correlations don’t simply disappear in the superconducting state, but are instead converted into a strongly renormalized coherent state, with stronger normal state correlations leading to stronger superconducting state renormalization. This conversion begins well above T C at the onset of superconducting fluctuations and it greatly increases the number of states that can pair. Therefore, there is positive feedback––the superconductive pairing creates the conversion that in turn strengthens the pairing. Although such positive feedback should enhance a conventional pairing mechanism, it could potentially also sustain an electronic pairing mechanism.

Authors:
 [1];  [1];  [1];  [1];  [2];  [1];  [1]
  1. Univ. of Colorado, Boulder, CO (United States)
  2. Institute of Physics of Complex Matter, École Polytechnique Fédérale de Lausanne (Switzerland)
Publication Date:
Research Org.:
Univ. of Colorado, Boulder, CO (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1499932
Grant/Contract Number:  
FG02-03ER46066
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 9; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Li, Haoxiang, Zhou, Xiaoqing, Parham, Stephen, Reber, Theodore J., Berger, Helmuth, Arnold, Gerald B., and Dessau, Daniel S. Coherent organization of electronic correlations as a mechanism to enhance and stabilize high-T C cuprate superconductivity. United States: N. p., 2018. Web. doi:10.1038/s41467-017-02422-2.
Li, Haoxiang, Zhou, Xiaoqing, Parham, Stephen, Reber, Theodore J., Berger, Helmuth, Arnold, Gerald B., & Dessau, Daniel S. Coherent organization of electronic correlations as a mechanism to enhance and stabilize high-T C cuprate superconductivity. United States. doi:10.1038/s41467-017-02422-2.
Li, Haoxiang, Zhou, Xiaoqing, Parham, Stephen, Reber, Theodore J., Berger, Helmuth, Arnold, Gerald B., and Dessau, Daniel S. Tue . "Coherent organization of electronic correlations as a mechanism to enhance and stabilize high-T C cuprate superconductivity". United States. doi:10.1038/s41467-017-02422-2. https://www.osti.gov/servlets/purl/1499932.
@article{osti_1499932,
title = {Coherent organization of electronic correlations as a mechanism to enhance and stabilize high-T C cuprate superconductivity},
author = {Li, Haoxiang and Zhou, Xiaoqing and Parham, Stephen and Reber, Theodore J. and Berger, Helmuth and Arnold, Gerald B. and Dessau, Daniel S.},
abstractNote = {Strong diffusive or incoherent electronic correlations are the signature of the strange-metal normal state of the cuprate superconductors, with these correlations considered to be undressed or removed in the superconducting state. A critical question is if these correlations are responsible for the high-temperature superconductivity. Here, utilizing a development in the analysis of angle-resolved photoemission data, we show that the strange-metal correlations don’t simply disappear in the superconducting state, but are instead converted into a strongly renormalized coherent state, with stronger normal state correlations leading to stronger superconducting state renormalization. This conversion begins well above T C at the onset of superconducting fluctuations and it greatly increases the number of states that can pair. Therefore, there is positive feedback––the superconductive pairing creates the conversion that in turn strengthens the pairing. Although such positive feedback should enhance a conventional pairing mechanism, it could potentially also sustain an electronic pairing mechanism.},
doi = {10.1038/s41467-017-02422-2},
journal = {Nature Communications},
number = 1,
volume = 9,
place = {United States},
year = {2018},
month = {1}
}

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