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Title: Anisotropic Superconducting Gap in Optimally Doped Iron–Based Material

Abstract

In this work we offer a comprehensive optical investigation of the optimally hole-doped Ba0.6K0.4Fe2As2 over a broad spectral range, as a function of temperature and of tunable applied stress, which acts as an external symmetry breaking field. We show that there is a large electronic nematicity at optimal doping which extends right under the superconducting dome and implies an anisotropy of the superconducting energy gaps.

Authors:
 [1];  [1];  [2];  [2];  [2];  [1]
  1. ETH Zurich (Switzerland)
  2. Stanford Univ., CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR). Scientific Discovery through Advanced Computing (SciDAC); USDOE Office of Science (SC), Basic Energy Sciences (BES); Swiss National Science Foundation (SNF)
OSTI Identifier:
1647090
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Superconductivity and Novel Magnetism
Additional Journal Information:
Journal Volume: 33; Journal Issue: 8; Journal ID: ISSN 1557-1939
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Nematicity; Iron-based superconductors; Optical properties

Citation Formats

Pal, A., Chinotti, M., Chu, J.-H., Kuo, H.-H., Fisher, I. R., and Degiorgi, L. Anisotropic Superconducting Gap in Optimally Doped Iron–Based Material. United States: N. p., 2019. Web. https://doi.org/10.1007/s10948-019-05390-4.
Pal, A., Chinotti, M., Chu, J.-H., Kuo, H.-H., Fisher, I. R., & Degiorgi, L. Anisotropic Superconducting Gap in Optimally Doped Iron–Based Material. United States. https://doi.org/10.1007/s10948-019-05390-4
Pal, A., Chinotti, M., Chu, J.-H., Kuo, H.-H., Fisher, I. R., and Degiorgi, L. Tue . "Anisotropic Superconducting Gap in Optimally Doped Iron–Based Material". United States. https://doi.org/10.1007/s10948-019-05390-4. https://www.osti.gov/servlets/purl/1647090.
@article{osti_1647090,
title = {Anisotropic Superconducting Gap in Optimally Doped Iron–Based Material},
author = {Pal, A. and Chinotti, M. and Chu, J.-H. and Kuo, H.-H. and Fisher, I. R. and Degiorgi, L.},
abstractNote = {In this work we offer a comprehensive optical investigation of the optimally hole-doped Ba0.6K0.4Fe2As2 over a broad spectral range, as a function of temperature and of tunable applied stress, which acts as an external symmetry breaking field. We show that there is a large electronic nematicity at optimal doping which extends right under the superconducting dome and implies an anisotropy of the superconducting energy gaps.},
doi = {10.1007/s10948-019-05390-4},
journal = {Journal of Superconductivity and Novel Magnetism},
number = 8,
volume = 33,
place = {United States},
year = {2019},
month = {12}
}

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Works referenced in this record:

Optical conductivity of BCS superconductors with arbitrary purity
journal, November 1991


Superconductivity and electronic fluctuations in Ba 1 x K x Fe 2 As 2 studied by Raman scattering
journal, February 2017


Eliashberg approach to infrared anomalies induced by the superconducting state of Ba 0.68 K 0.32 Fe 2 As 2 single crystals
journal, November 2011


Colloquium : Theory of intertwined orders in high temperature superconductors
journal, May 2015

  • Fradkin, Eduardo; Kivelson, Steven A.; Tranquada, John M.
  • Reviews of Modern Physics, Vol. 87, Issue 2
  • DOI: 10.1103/RevModPhys.87.457

Hysteretic behavior in the optical response of the underdoped Fe-arsenide Ba( Fe 1 x Co x ) 2 As 2 in the electronic nematic phase
journal, February 2014


Nematic superconducting state in iron pnictide superconductors
journal, December 2017


Hidden T -Linear Scattering Rate in Ba 0.6 K 0.4 Fe 2 As 2 Revealed by Optical Spectroscopy
journal, September 2013


Enhancement of Superconductivity near a Nematic Quantum Critical Point
journal, March 2015


Effect of tensile stress on the in-plane resistivity anisotropy in BaFe 2 As 2
journal, April 2012


Cooper pairing in non-Fermi liquids
journal, March 2015


Quenched disorder and vestigial nematicity in the pseudogap regime of the cuprates
journal, May 2014

  • Nie, L.; Tarjus, G.; Kivelson, S. A.
  • Proceedings of the National Academy of Sciences, Vol. 111, Issue 22
  • DOI: 10.1073/pnas.1406019111

Effect of Co Doping on the In-Plane Anisotropy in the Optical Spectrum of Underdoped Ba ( Fe 1 x Co x ) 2 As 2
journal, November 2012


Divergent Nematic Susceptibility in an Iron Arsenide Superconductor
journal, August 2012


Discovery of orbital-selective Cooper pairing in FeSe
journal, July 2017


Electrodynamic response in the electronic nematic phase of BaFe 2 As 2
journal, February 2016


Optical conductivity of Ba 0.6 K 0.4 Fe 2 As 2 : The effect of in-plane and out-of-plane doping in the superconducting gap
journal, November 2013


Optical anisotropy in optimally doped iron-based superconductor
journal, January 2019


Measurement of the elastoresistivity coefficients of the underdoped iron arsenide Ba(Fe 0.975 Co 0.025 ) 2 As 2
journal, August 2013


Three-dimensional superconducting gap in FeSe from angle-resolved photoemission spectroscopy
journal, May 2018


Optical anisotropy in the electronic nematic phase of FeSe
journal, September 2017


Optical investigations of the normal and superconducting states reveal two electronic subsystems in iron pnictides
journal, March 2010


Nematicity at the Hund's metal crossover in iron superconductors
journal, April 2017


Origin of the Resistive Anisotropy in the Electronic Nematic Phase of BaFe 2 As 2 Revealed by Optical Spectroscopy
journal, September 2015


In-Plane Resistivity Anisotropy in an Underdoped Iron Arsenide Superconductor
journal, August 2010


Ubiquitous signatures of nematic quantum criticality in optimally doped Fe-based superconductors
journal, May 2016


Simultaneous Transitions in Cuprate Momentum-Space Topology and Electronic Symmetry Breaking
journal, May 2014


Unprecedented anisotropic metallic state in undoped iron arsenide BaFe2As2 revealed by optical spectroscopy
journal, July 2011

  • Nakajima, M.; Liang, T.; Ishida, S.
  • Proceedings of the National Academy of Sciences, Vol. 108, Issue 30
  • DOI: 10.1073/pnas.1100102108

In-plane electronic anisotropy of underdoped ‘122’ Fe-arsenide superconductors revealed by measurements of detwinned single crystals
journal, September 2011


Infrared probe of the gap evolution across the phase diagram of Ba 1 x K x Fe 2 As 2
journal, September 2017