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Title: Universal 2 Δ max / k B T c scaling decoupled from the electronic coherence in iron-based superconductors

Abstract

Here in this paper, we use angle-resolved photoemission spectroscopy to study superconductivity that emerges in two extreme cases, from a Fermi-liquid phase (LiFeAs) and an incoherent bad-metal phase ( FeTe 0.55Se 0.45). We find that although the electronic coherence can strongly reshape the single-particle spectral function in the superconducting state, it is decoupled from the maximum-superconducting-gap and T c ratio 2Δ max/k BT c, which shows a universal scaling that is valid for all iron-based superconductors (FeSCs). Our observation excludes pairing scenarios in the BCS and the BEC limit for FeSCs and calls for a universal strong-coupling pairing mechanism for the FeSCs.

Authors:
ORCiD logo [1];  [2];  [3];  [2];  [2];  [2];  [2];  [2];  [4];  [5];  [6];  [7];  [6];  [6];  [7]
  1. Chinese Academy of Sciences (CAS), Beijing (China). Beijing National Lab. for Condensed Matter Physics, Inst. of Physics; Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.
  2. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.
  3. Beijing Normal Univ., Beijing (China). Dept. of Physics and Center for Advanced Quantum Studies
  4. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.; Rutgers Univ., Piscataway, NJ (United States). Dept. of Physics and Astronomy
  5. Shanghai Jiao Tong Univ. (China). Tsung-Dao Lee Inst., School of Physics and Astronomy
  6. Chinese Academy of Sciences (CAS), Beijing (China). Beijing National Lab. for Condensed Matter Physics, Inst. of Physics
  7. Chinese Academy of Sciences (CAS), Beijing (China). Beijing National Lab. for Condensed Matter Physics, Inst. of Physics; Collaborative Innovation Center of Quantum Matter, Beijing (China)
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:
1466587
Alternate Identifier(s):
OSTI ID: 1459472
Report Number(s):
BNL-207992-2018-JAAM
Journal ID: ISSN 2469-9950; PRBMDO
Grant/Contract Number:  
SC0012704
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 98; Journal Issue: 2; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Miao, Hu, Brito, W. H., Yin, Z. P., Zhong, R. D., Gu, G. D., Johnson, P. D., Dean, M. P. M., Choi, S., Kotliar, G., Ku, W., Wang, X. C., Jin, C. Q., Wu, S. -F., Qian, T., and Ding, H. Universal 2Δmax/kBTc scaling decoupled from the electronic coherence in iron-based superconductors. United States: N. p., 2018. Web. doi:10.1103/PhysRevB.98.020502.
Miao, Hu, Brito, W. H., Yin, Z. P., Zhong, R. D., Gu, G. D., Johnson, P. D., Dean, M. P. M., Choi, S., Kotliar, G., Ku, W., Wang, X. C., Jin, C. Q., Wu, S. -F., Qian, T., & Ding, H. Universal 2Δmax/kBTc scaling decoupled from the electronic coherence in iron-based superconductors. United States. https://doi.org/10.1103/PhysRevB.98.020502
Miao, Hu, Brito, W. H., Yin, Z. P., Zhong, R. D., Gu, G. D., Johnson, P. D., Dean, M. P. M., Choi, S., Kotliar, G., Ku, W., Wang, X. C., Jin, C. Q., Wu, S. -F., Qian, T., and Ding, H. Sun . "Universal 2Δmax/kBTc scaling decoupled from the electronic coherence in iron-based superconductors". United States. https://doi.org/10.1103/PhysRevB.98.020502. https://www.osti.gov/servlets/purl/1466587.
@article{osti_1466587,
title = {Universal 2Δmax/kBTc scaling decoupled from the electronic coherence in iron-based superconductors},
author = {Miao, Hu and Brito, W. H. and Yin, Z. P. and Zhong, R. D. and Gu, G. D. and Johnson, P. D. and Dean, M. P. M. and Choi, S. and Kotliar, G. and Ku, W. and Wang, X. C. and Jin, C. Q. and Wu, S. -F. and Qian, T. and Ding, H.},
abstractNote = {Here in this paper, we use angle-resolved photoemission spectroscopy to study superconductivity that emerges in two extreme cases, from a Fermi-liquid phase (LiFeAs) and an incoherent bad-metal phase ( FeTe0.55Se0.45). We find that although the electronic coherence can strongly reshape the single-particle spectral function in the superconducting state, it is decoupled from the maximum-superconducting-gap and Tc ratio 2Δmax/kBTc, which shows a universal scaling that is valid for all iron-based superconductors (FeSCs). Our observation excludes pairing scenarios in the BCS and the BEC limit for FeSCs and calls for a universal strong-coupling pairing mechanism for the FeSCs.},
doi = {10.1103/PhysRevB.98.020502},
url = {https://www.osti.gov/biblio/1466587}, journal = {Physical Review B},
issn = {2469-9950},
number = 2,
volume = 98,
place = {United States},
year = {2018},
month = {7}
}

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Cited by: 3 works
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Works referenced in this record:

Concepts relating magnetic interactions, intertwined electronic orders, and strongly correlated superconductivity
journal, October 2013


Spin dynamics and orbital-antiphase pairing symmetry in iron-based superconductors
journal, October 2014


Unconventional Pairing Originating from the Disconnected Fermi Surfaces of Superconducting LaFeAsO 1 x F x
journal, August 2008


Incommensurate magnetic fluctuations and Fermi surface topology in LiFeAs
journal, November 2012


Discrete energy levels of Caroli-de Gennes-Matricon states in quantum limit in FeTe0.55Se0.45
journal, March 2018


Magnetic ground state of FeSe
journal, July 2016


Shallow pockets and very strong coupling superconductivity in FeSexTe1−x
journal, February 2012


SUPERCONDUCTIVITY: The True Colors of Cuprates
journal, March 2002


Antiferromagnetic order and spin dynamics in iron-based superconductors
journal, August 2015


Temperature Dependent Photoemission Studies of Optimally Doped Bi 2 Sr 2 CaCu 2 O 8
journal, March 1999


Spin-Orbit Interactions and the Nematicity Observed in the Fe-Based Superconductors
journal, April 2015


Coherent Quasiparticle Weight and Its Connection to High- T c Superconductivity from Angle-Resolved Photoemission
journal, November 2001


Fermi surface nesting induced strong pairing in iron-based superconductors
journal, April 2009


Strong Correlations and Magnetic Frustration in the High T c Iron Pnictides
journal, August 2008


Unconventional Superconductivity with a Sign Reversal in the Order Parameter of LaFeAsO 1 x F x
journal, July 2008


From quantum matter to high-temperature superconductivity in copper oxides
journal, February 2015


Determination of the Upper Critical Field of a Single Crystal LiFeAs: The Magnetic Torque Study up to 35 Tesla
journal, January 2011


Nodal superconducting-gap structure in ferropnictide superconductor BaFe2(As0.7P0.3)2
journal, March 2012


Observation of a robust zero-energy bound state in iron-based superconductor Fe(Te,Se)
journal, June 2015


Observation of strong electron pairing on bands without Fermi surfaces in LiFe1−xCoxAs
journal, January 2015


Crossover from Bardeen-Cooper-Schrieffer to Bose-Einstein Condensation and the Unitary Fermi Gas
journal, March 2014


Observation of Fermi-surface–dependent nodeless superconducting gaps in Ba 0.6 K 0.4 Fe 2 As 2
journal, July 2008


Effect of Li-deficiency impurities on the electron-overdoped LiFeAs superconductor
journal, October 2012


Observation of topological superconductivity on the surface of an iron-based superconductor
journal, March 2018


Strong nodeless pairing on separate electron Fermi surface sheets in (Tl, K)Fe 1.78 Se 2 probed by ARPES
journal, February 2011


Spectral weight transfer in strongly correlated Fe 1.03 Te
journal, September 2014


Doping a Mott insulator: Physics of high-temperature superconductivity
journal, January 2006


Pairing Symmetry in a Two-Orbital Exchange Coupling Model of Oxypnictides
journal, November 2008


Strong correlations make high-temperature superconductors robust against disorder
journal, July 2008


Close relationship between superconductivity and the bosonic mode in Ba0.6K0.4Fe2As2 and Na(Fe0.975Co0.025)As
journal, November 2012


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