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Title: Orbital selectivity of layer-resolved tunneling in the iron-based superconductor Ba0.6K0.4Fe2As2

Abstract

Here, we use scanning tunneling microscopy/spectroscopy to elucidate the Cooper pairing of the iron pnictide superconductor Ba0.6K0.4Fe2As2. By a cold-cleaving technique, we obtain atomically resolved termination surfaces with different layer identities. Remarkably, we observe that the low-energy tunneling spectrum related to superconductivity has an unprecedented dependence on the layer identity. By cross referencing with the angle-revolved photoemission results and the tunneling data of LiFeAs, we find that tunneling on each termination surface probes superconductivity through selecting distinct Fe-3$$\textit{d}$$ orbitals. These findings imply the real-space orbital features of the Cooper pairing in the iron pnictide superconductors, and propose a general concept that, for complex multiorbital material, tunneling on different terminating layers can feature orbital selectivity.

Authors:
ORCiD logo [1];  [1];  [2]; ORCiD logo [2];  [2];  [2];  [2];  [1];  [3];  [3];  [1];  [4];  [1];  [5];  [6];  [7];  [4]; ORCiD logo [8]
+ Show Author Affiliations
  1. Chinese Academy of Sciences (CAS), Beijing (China). Institute of Physics
  2. Univ. of Houston, TX (United States)
  3. Rice Univ., Houston, TX (United States)
  4. Chinese Academy of Sciences (CAS), Beijing (China). Institute of Physics; University of Chinese Academy of Sciences (CAS), Beijing (China)
  5. Chinese Academy of Sciences (CAS), Beijing (China). Institute of Physics; Purdue Univ., West Lafayette, IN (United States)
  6. Boston College, Chestnut Hill, MA (United States)
  7. Univ. of Houston, TX (United States); Chinese Academy of Sciences (CAS), Shanghai (China). State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology; CAS Center for Excellence in Superconducting Electronics, Shanghai (China)
  8. Chinese Academy of Sciences (CAS), Beijing (China). Institute of Physics; Univ. of Houston, TX (United States); University of Chinese Academy of Sciences (CAS), Beijing (China); Songshang Lake Material Laboratory, Guangdong (China)
Publication Date:
Research Org.:
Boston College, Chestnut Hill, MA (United States)
Sponsoring Org.:
Chinese Academy of Sciences (CAS); National Natural Science Foundation of China (NSFC); Ministry of Science and Technology of the People’s Republic of China (MOST); Shanghai Science and Technology Committee; State of Texas; Robert A. Welch Foundation; USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1800972
Grant/Contract Number:  
FG02-99ER45747; 11227903; Z181100004218007; 2015CB921300; 2015CB921304; 2017YFA0302903; XDB04040300; XDB07000000; 18ZR1447300; E-1146; DMR-1700081
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 102; Journal Issue: 5; 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; Materials Science; Physics

Citation Formats

Yin, J.-X., Wu, X.-X., Li, Jian, Wu, Zheng, Wang, J.-H., Ting, C.-S., Hor, P.-H., Liang, X. J., Zhang, C. L., Dai, P. C., Wang, X. C., Jin, C. Q., Chen, G. F., Hu, J. P., Wang, Z.-Q., Li, Ang, Ding, H., and Pan, S. H. Orbital selectivity of layer-resolved tunneling in the iron-based superconductor Ba0.6K0.4Fe2As2. United States: N. p., 2020. Web. doi:10.1103/physrevb.102.054515.
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Yin, J.-X., Wu, X.-X., Li, Jian, Wu, Zheng, Wang, J.-H., Ting, C.-S., Hor, P.-H., Liang, X. J., Zhang, C. L., Dai, P. C., Wang, X. C., Jin, C. Q., Chen, G. F., Hu, J. P., Wang, Z.-Q., Li, Ang, Ding, H., & Pan, S. H. Orbital selectivity of layer-resolved tunneling in the iron-based superconductor Ba0.6K0.4Fe2As2. United States. https://doi.org/10.1103/physrevb.102.054515
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Yin, J.-X., Wu, X.-X., Li, Jian, Wu, Zheng, Wang, J.-H., Ting, C.-S., Hor, P.-H., Liang, X. J., Zhang, C. L., Dai, P. C., Wang, X. C., Jin, C. Q., Chen, G. F., Hu, J. P., Wang, Z.-Q., Li, Ang, Ding, H., and Pan, S. H. Fri . "Orbital selectivity of layer-resolved tunneling in the iron-based superconductor Ba0.6K0.4Fe2As2". United States. https://doi.org/10.1103/physrevb.102.054515. https://www.osti.gov/servlets/purl/1800972.
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@article{osti_1800972,
title = {Orbital selectivity of layer-resolved tunneling in the iron-based superconductor Ba0.6K0.4Fe2As2},
author = {Yin, J.-X. and Wu, X.-X. and Li, Jian and Wu, Zheng and Wang, J.-H. and Ting, C.-S. and Hor, P.-H. and Liang, X. J. and Zhang, C. L. and Dai, P. C. and Wang, X. C. and Jin, C. Q. and Chen, G. F. and Hu, J. P. and Wang, Z.-Q. and Li, Ang and Ding, H. and Pan, S. H.},
abstractNote = {Here, we use scanning tunneling microscopy/spectroscopy to elucidate the Cooper pairing of the iron pnictide superconductor Ba0.6K0.4Fe2As2. By a cold-cleaving technique, we obtain atomically resolved termination surfaces with different layer identities. Remarkably, we observe that the low-energy tunneling spectrum related to superconductivity has an unprecedented dependence on the layer identity. By cross referencing with the angle-revolved photoemission results and the tunneling data of LiFeAs, we find that tunneling on each termination surface probes superconductivity through selecting distinct Fe-3$\textit{d}$ orbitals. These findings imply the real-space orbital features of the Cooper pairing in the iron pnictide superconductors, and propose a general concept that, for complex multiorbital material, tunneling on different terminating layers can feature orbital selectivity.},
doi = {10.1103/physrevb.102.054515},
journal = {Physical Review B},
number = 5,
volume = 102,
place = {United States},
year = {Fri Aug 21 00:00:00 EDT 2020},
month = {Fri Aug 21 00:00:00 EDT 2020}
}
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Journal Article:
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Publisher's Version of Record
https://doi.org/10.1103/physrevb.102.054515
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Works referenced in this record:

Generalized Gradient Approximation Made Simple
journal, October 1996

  • Perdew, John P.; Burke, Kieron; Ernzerhof, Matthias
  • Physical Review Letters, Vol. 77, Issue 18, p. 3865-3868
  • DOI: 10.1103/PhysRevLett.77.3865

Iron-Based Superconductors as Odd-Parity Superconductors
journal, July 2013

Tracing the Electronic Pairing Glue in Unconventional Superconductors via Inelastic Scanning Tunneling Spectroscopy
journal, April 2017

Orbital characters determined from Fermi surface intensity patterns using angle-resolved photoemission spectroscopy
journal, June 2012

Observation of universal strong orbital-dependent correlation effects in iron chalcogenides
journal, July 2015

  • Yi, M.; Liu, Z-K; Zhang, Y.
  • Nature Communications, Vol. 6, Issue 1
  • DOI: 10.1038/ncomms8777

Extraordinary Doping Effects on Quasiparticle Scattering and Bandwidth in Iron-Based Superconductors
journal, September 2014

Efficiency of ab-initio total energy calculations for metals and semiconductors using a plane-wave basis set
journal, July 1996

Observation of ordered vortices with Andreev bound states in Ba0.6K0.4Fe2As2
journal, February 2011

  • Shan, Lei; Wang, Yong-Lei; Shen, Bing
  • Nature Physics, Vol. 7, Issue 4
  • DOI: 10.1038/nphys1908

Visualizing heavy fermions emerging in a quantum critical Kondo lattice
journal, June 2012

  • Aynajian, Pegor; da Silva Neto, Eduardo H.; Gyenis, András
  • Nature, Vol. 486, Issue 7402
  • DOI: 10.1038/nature11204

Unconventional Anisotropic s -Wave Superconducting Gaps of the LiFeAs Iron-Pnictide Superconductor
journal, January 2012

Vector field controlled vortex lattice symmetry in LiFeAs using scanning tunneling microscopy
journal, April 2019

Orbital Selective Spin Excitations and their Impact on Superconductivity of LiFe 1 − x Co x As
journal, June 2016

Field-free platform for Majorana-like zero mode in superconductors with a topological surface state
journal, March 2020

Spectroscopic scanning tunneling microscopy insights into Fe-based superconductors
journal, November 2011

Orbital-Independent Superconducting Gaps in Iron Pnictides
journal, April 2011

Special points for Brillouin-zone integrations
journal, June 1976

  • Monkhorst, Hendrik J.; Pack, James D.
  • Physical Review B, Vol. 13, Issue 12, p. 5188-5192
  • DOI: 10.1103/PhysRevB.13.5188

Towards a quantitative description of tunneling conductance of superconductors: Application to LiFeAs
journal, December 2016

Quantum Phase Transition of Correlated Iron-Based Superconductivity in LiFe 1 − x Co x As
journal, November 2019

Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set
journal, October 1996

Anisotropic Energy Gaps of Iron-Based Superconductivity from Intraband Quasiparticle Interference in LiFeAs
journal, May 2012

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

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

  • Yin, J-X.; Wu, Zheng; Wang, J-H.
  • Nature Physics, Vol. 11, Issue 7
  • DOI: 10.1038/nphys3371

Near-degeneracy of several pairing channels in multiorbital models for the Fe pnictides
journal, February 2009

Evidence of a Spin Resonance Mode in the Iron-Based Superconductor Ba 0.6 K 0.4 Fe 2 As 2 from Scanning Tunneling Spectroscopy
journal, May 2012

Density Functional Study of LaFeAsO 1 − x F x : A Low Carrier Density Superconductor Near Itinerant Magnetism
journal, June 2008

Scanning tunneling microscopy/spectroscopy of vortices in LiFeAs
journal, June 2012

Anisotropic spin fluctuations in detwinned FeSe
journal, May 2019

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

Role of the orbital degree of freedom in iron-based superconductors
journal, October 2017

Emerging local Kondo screening and spatial coherence in the heavy-fermion metal YbRh2Si2
journal, June 2011

Observation of a ubiquitous three-dimensional superconducting gap function in optimally doped Ba0.6K0.4Fe2As2
journal, January 2011

  • Xu, Y-M.; Huang, Y-B.; Cui, X-Y.
  • Nature Physics, Vol. 7, Issue 3
  • DOI: 10.1038/nphys1879

Extended Hubbard model of superconductivity driven by charge fluctuations in iron pnictides
journal, October 2011

Ab initiomolecular dynamics for liquid metals
journal, January 1993

Observation of a Van Hove singularity and implication for strong-coupling induced Cooper pairing in KFe 2 As 2
journal, October 2015

High-temperature superconductivity in iron-based materials
journal, August 2010

  • Paglione, Johnpierre; Greene, Richard L.
  • Nature Physics, Vol. 6, Issue 9
  • DOI: 10.1038/nphys1759

Negative flat band magnetism in a spin–orbit-coupled correlated kagome magnet
journal, February 2019

Pairing Mechanism in Hund’s Metal Superconductors and the Universality of the Superconducting Gap to Critical Temperature Ratio
journal, November 2018

Tip-Pressure-Induced Incoherent Energy Gap in CaFe 2 As 2
journal, June 2016

Nematic Electronic Structure in the “Parent” State of the Iron-Based Superconductor Ca(Fe 1– x Co x ) 2 As 2
journal, January 2010

Giant and anisotropic many-body spin–orbit tunability in a strongly correlated kagome magnet
journal, September 2018

Surface terminations and layer-resolved tunneling spectroscopy of the 122 iron pnictide superconductors
journal, April 2019

Mapping the Electronic Structure of Each Ingredient Oxide Layer of High- T c Cuprate Superconductor Bi 2 Sr 2 CaCu 2 O 8 + δ
journal, December 2015

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