Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

ARPES detection of superconducting gap sign in unconventional superconductors

Journal Article · · Nature Communications
 [1];  [2];  [1];  [3];  [1];  [4];  [1];  [1];  [1];  [4];  [4];  [5];  [6];  [6];  [6];  [6];  [7];  [7];  [6];  [8] more »;  [7];  [9];  [7] « less
  1. Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Physics. Beijing National Lab. for Condensed Matter Physics (BNLCP-CAS)
  2. Pohang Univ. of Science and Technology (POSTECH) (Korea, Republic of)
  3. Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Physics. Beijing National Lab. for Condensed Matter Physics (BNLCP-CAS); Beijing Academy of Quantum Information Sciences (China)
  4. Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Physics. Beijing National Lab. for Condensed Matter Physics (BNLCP-CAS); University of Chinese Academy of Sciences, Beijing (China)
  5. Brookhaven National Laboratory (BNL), Upton, NY (United States)
  6. Chinese Academy of Sciences (CAS), Beijing (China). Technical Institute of Physics and Chemistry
  7. Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Physics. Beijing National Lab. for Condensed Matter Physics (BNLCP-CAS); University of Chinese Academy of Sciences, Beijing (China); Songshan Lake Materials Laboratory, Guangdong (China)
  8. Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Physics. Beijing National Lab. for Condensed Matter Physics (BNLCP-CAS); Beijing Academy of Quantum Information Sciences (China); University of Chinese Academy of Sciences, Beijing (China)
  9. Sungkyunkwan Univ., Suwon (Republic of Korea)
+ Show Author Affiliations

The superconducting gap symmetry is crucial in understanding the underlying superconductivity mechanism. Angle-resolved photoemission spectroscopy (ARPES) has played a key role in determining the gap symmetry in unconventional superconductors. However, it has been considered so far that ARPES can only measure the magnitude of the superconducting gap but not its phase; the phase has to be detected by other phase-sensitive techniques. Here we propose a method to directly detect the superconducting gap sign by ARPES. This method is successfully validated in a cuprate superconductor Bi2Sr2CaCu2O8+δ with a well-known d-wave gap symmetry. When two bands have a strong interband interaction, the resulted electronic structures in the superconducting state are sensitive to the relative gap sign between the two bands. Our present work provides an approach to detect the gap sign and can be applied to various superconductors, particularly those with multiple orbitals like the iron-based superconductors.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Key Research and Development Program of China; National Natural Science Foundation of China (NSFC); Chinese Academy of Sciences (CAS); Innovation Program for Quantum Science and Technology; National Research Foundation (NRF) of Korea
Grant/Contract Number:
SC0012704
OSTI ID:
2396613
Report Number(s):
BNL--225807-2024-JAAM
Journal Information:
Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 15; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

References (49)

Substrate Doping Effect and Unusually Large Angle van Hove Singularity Evolution in Twisted Bi- and Multilayer Graphene journal May 2017
Iron-based superconductors: Current status of materials and pairing mechanism journal July 2015
Van der Waals heterostructures journal July 2013
From quantum matter to high-temperature superconductivity in copper oxides journal February 2015
Unconventional superconductivity in magic-angle graphene superlattices journal March 2018
Scrutinizing the double superconducting gaps and strong coupling pairing in (Li1−xFex)OHFeSe journal January 2016
Imaging Cooper pairing of heavy fermions in CeCoIn5 journal July 2013
Plain s-wave superconductivity in single-layer FeSe on SrTiO3 probed by scanning tunnelling microscopy journal August 2015
Directly visualizing the sign change of d-wave superconducting gap in Bi2Sr2CaCu2O8+δ by phase-referenced quasiparticle interference journal April 2019
Nodal s± pairing symmetry in an iron-based superconductor with only hole pockets journal January 2024
Development of a vacuum ultraviolet laser-based angle-resolved photoemission system with a superhigh energy resolution better than 1 meV journal January 2008
Moire bands in twisted double-layer graphene journal July 2011
The pseudogap in high-temperature superconductors: an experimental survey journal January 1999
Gap symmetry and structure of Fe-based superconductors journal October 2011
A Reproducible Approach of Preparing High-Quality Overdoped Bi 2 Sr 2 CaCu 2 O 8+ δ Single Crystals by Oxygen Annealing and Quenching Method journal June 2016
Distinct Superconducting Gap on Two Bilayer-Split Fermi Surface Sheets in Bi 2 Sr 2 CaCu 2 O 8+ δ Superconductor journal May 2019
Common (π,π) Band Folding and Surface Reconstruction in FeAs-Based Superconductors journal June 2021
Surface reconstruction and charge modulation in BaFe2As2 superconducting film journal July 2018
New developments in laser-based photoemission spectroscopy and its scientific applications: a key issues review journal April 2018
Near-degeneracy of several pairing channels in multiorbital models for the Fe pnictides journal February 2009
Evolution of incommensurate superstructure and electronic structure with Pb substitution in (Bi 2− x Pb x )Sr 2 CaCu 2 O 8+ δ superconductors journal July 2019
Reconstruction of the Bi 2 Sr 2 CaCu 2 O 8 + δ Fermi surface journal December 2019
Selective hybridization between the main band and the superstructure band in the Bi 2 Sr 2 CaCu 2 O 8 + δ superconductor journal January 2020
Angle-resolved photoemission spectroscopy study of the superconducting gap anisotropy in Bi 2 Sr 2 Ca Cu 2 O 8 + x journal October 1996
Two types of s -wave pairing due to magnetic and orbital fluctuations in the two-dimensional 16-band d − p model for iron-based superconductors journal February 2010
d -wave pairing from spin fluctuations in the K x Fe 2 − y Se 2 superconductors journal March 2011
Gap symmetry in KFe 2 As 2 and the cos 4 θ gap component in LiFeAs journal January 2012
Doping evolution and polar surface reconstruction of the infinite-layer cuprate Sr 1 − x La x CuO 2 journal July 2015
Unconventional Superconductivity with a Sign Reversal in the Order Parameter of LaFeAsO 1 − x F x journal July 2008
Strong Correlations and Magnetic Frustration in the High T c Iron Pnictides journal August 2008
Unconventional Pairing Originating from the Disconnected Fermi Surfaces of Superconducting LaFeAsO 1 − x F x journal August 2008
Pairing Symmetry in a Two-Orbital Exchange Coupling Model of Oxypnictides journal November 2008
Orbital-Fluctuation-Mediated Superconductivity in Iron Pnictides: Analysis of the Five-Orbital Hubbard-Holstein Model journal April 2010
Interpocket Pairing and Gap Symmetry in Fe-Based Superconductors with Only Electron Pockets journal June 2012
Hund Interaction, Spin-Orbit Coupling, and the Mechanism of Superconductivity in Strongly Hole-Doped Iron Pnictides journal February 2017
Observation of Bogoliubov Band Hybridization in the Optimally Doped Trilayer Bi 2 Sr 2 Ca 2 Cu 3 O 10 + δ journal November 2017
Hybridization of Bogoliubov Quasiparticles between Adjacent CuO2 Layers in the Triple-Layer Cuprate Bi2Sr2Ca2Cu3O10+δ Studied by Angle-Resolved Photoemission Spectroscopy journal November 2021
Anomalously large gap anisotropy in the a - b plane of Bi 2 Sr 2 CaCu 2 O 8 + δ journal March 1993
Experimental determination of the superconducting pairing state in YBCO from the phase coherence of YBCO-Pb dc SQUIDs journal September 1993
Pairing Symmetry and Flux Quantization in a Tricrystal Superconducting Ring of Y Ba 2 Cu 3 O 7 − δ journal July 1994
Pairing symmetry in cuprate superconductors journal October 2000
Angle-resolved photoemission studies of the cuprate superconductors journal April 2003
Doping a Mott insulator: Physics of high-temperature superconductivity journal January 2006
A common thread: The pairing interaction for unconventional superconductors journal October 2012
Coherence Factors in a High-Tc Cuprate Probed by Quasi-Particle Scattering Off Vortices journal February 2009
Unconventional s-Wave Superconductivity in Fe(Se,Te) journal April 2010
Discovery of orbital-selective Cooper pairing in FeSe journal July 2017
Time-reversal symmetry breaking superconductivity between twisted cuprate superconductors journal December 2023
The electron pairing of K x Fe 2− y Se 2 journal February 2011

Similar Records

Directly visualizing the sign change of d-wave superconducting gap in Bi2Sr2CaCu2O8+δ by phase-referenced quasiparticle interference
Journal Article · Mon Apr 08 00:00:00 EDT 2019 · Nature Communications · OSTI ID:1508525
ARPES studies of the superconducting gap in high temperature superconductors
Conference · Mon Dec 30 23:00:00 EST 1996 · OSTI ID:549844
Effects of Coulomb interactions on the superconducting gaps in iron-based superconductors
Journal Article · Wed Apr 27 00:00:00 EDT 2016 · Physical Review B · OSTI ID:1387865

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
electronic properties and materials
superconducting properties and materials