Interrogating the superconductor Ca-10(Pt4As8)(Fe2-xPtxAs2)5 Layer-by-layer

Kim, Jisun; Zhu, Yimei; Nam, Hyoungdo; Li, Guorong; Karki, A. B.; Wang, Zhen; Shih, Chih-Kang; Zhang, Jiandi; Jin, Rongying; Plummer, E. W.

doi:10.1038/srep35365

Title: Interrogating the superconductor Ca-₁₀(Pt₄As₈)(Fe_2-xPt_xAs₂)₅ Layer-by-layer

Abstract

Ever since the discovery of high-Tc superconductivity in layered cuprates, the roles that individual layers play have been debated, due to difficulty in layer-by-layer characterization. While there is similar challenge in many Fe-based layered superconductors, the newly-discovered Ca₁₀(Pt₄As₈)(Fe₂As₂)₅ provides opportunities to explore superconductivity layer by layer, because it contains both superconducting building blocks (Fe₂As₂ layers) and intermediate Pt₄As₈ layers. Cleaving a single crystal under ultra-high vacuum results in multiple terminations: an ordered Pt₄As₈ layer, two reconstructed Ca layers on the top of a Pt₄As₈ layer, and disordered Ca layer on the top of Fe₂As₂ layer. The electronic properties of individual layers are studied using scanning tunneling microscopy/spectroscopy (STM/S), which reveals different spectra for each surface. Remarkably superconducting coherence peaks are seen only on the ordered Ca/Pt₄As₈ layer. Our results indicate that an ordered structure with proper charge balance is required in order to preserve superconductivity.

Authors:

Kim, Jisun ^[1]; Zhu, Yimei ^[2]; Nam, Hyoungdo ^[3]; Li, Guorong ^[1]; Karki, A. B. ^[1]; Wang, Zhen ^[4]; Shih, Chih-Kang ^[3]; Zhang, Jiandi ^[1]; Jin, Rongying ^[1]; Plummer, E. W. ^[1]

Louisiana State Univ., Baton Rouge, LA (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States)
Univ. of Texas, Austin, TX (United States)
Louisiana State Univ., Baton Rouge, LA (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)

Publication Date:: Fri Oct 14 00:00:00 EDT 2016

Research Org.:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1341611

Report Number(s):: BNL-113334-2016-JA
Journal ID: ISSN 2045-2322; R&D Project: MA015MACA; KC0201010

Grant/Contract Number:: SC00112704

Resource Type:: Accepted Manuscript

Journal Name:: Scientific Reports

Additional Journal Information:: Journal Volume: 6; Journal ID: ISSN 2045-2322

Publisher:: Nature Publishing Group

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats


                    Kim, Jisun, Zhu, Yimei, Nam, Hyoungdo, Li, Guorong, Karki, A. B., Wang, Zhen, Shih, Chih-Kang, Zhang, Jiandi, Jin, Rongying, and Plummer, E. W. Interrogating the superconductor Ca-10(Pt4As8)(Fe2-xPtxAs2)5 Layer-by-layer.  United States: N. p., 2016. 
Web.  doi:10.1038/srep35365.

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                    Kim, Jisun, Zhu, Yimei, Nam, Hyoungdo, Li, Guorong, Karki, A. B., Wang, Zhen, Shih, Chih-Kang, Zhang, Jiandi, Jin, Rongying, & Plummer, E. W. Interrogating the superconductor Ca-10(Pt4As8)(Fe2-xPtxAs2)5 Layer-by-layer.  United States.  https://doi.org/10.1038/srep35365

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                    Kim, Jisun, Zhu, Yimei, Nam, Hyoungdo, Li, Guorong, Karki, A. B., Wang, Zhen, Shih, Chih-Kang, Zhang, Jiandi, Jin, Rongying, and Plummer, E. W. Fri .  
"Interrogating the superconductor Ca-10(Pt4As8)(Fe2-xPtxAs2)5 Layer-by-layer".  United States.  https://doi.org/10.1038/srep35365.  https://www.osti.gov/servlets/purl/1341611.

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@article{osti_1341611,

  title        = {Interrogating the superconductor Ca-10(Pt4As8)(Fe2-xPtxAs2)5 Layer-by-layer},

  author       = {Kim, Jisun and Zhu, Yimei and Nam, Hyoungdo and Li, Guorong and Karki, A. B. and Wang, Zhen and Shih, Chih-Kang and Zhang, Jiandi and Jin, Rongying and Plummer, E. W.},

  abstractNote = {Ever since the discovery of high-Tc superconductivity in layered cuprates, the roles that individual layers play have been debated, due to difficulty in layer-by-layer characterization. While there is similar challenge in many Fe-based layered superconductors, the newly-discovered Ca10(Pt4As8)(Fe2As2)5 provides opportunities to explore superconductivity layer by layer, because it contains both superconducting building blocks (Fe2As2 layers) and intermediate Pt4As8 layers. Cleaving a single crystal under ultra-high vacuum results in multiple terminations: an ordered Pt4As8 layer, two reconstructed Ca layers on the top of a Pt4As8 layer, and disordered Ca layer on the top of Fe2As2 layer. The electronic properties of individual layers are studied using scanning tunneling microscopy/spectroscopy (STM/S), which reveals different spectra for each surface. Remarkably superconducting coherence peaks are seen only on the ordered Ca/Pt4As8 layer. Our results indicate that an ordered structure with proper charge balance is required in order to preserve superconductivity.},

  doi          = {10.1038/srep35365},

  journal      = {Scientific Reports},

  number       = ,

  volume       = 6,

  place        = {United States},

  year         = {Fri Oct 14 00:00:00 EDT 2016},

  month        = {Fri Oct 14 00:00:00 EDT 2016}

}

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Works referencing / citing this record:

Evidence for a preformed Cooper pair model in the pseudogap spectra of a Ca10(Pt4As8)(Fe2As2)5 single crystal with a nodal superconducting gap
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Title: Interrogating the superconductor Ca-10(Pt4As8)(Fe2-xPtxAs2)5 Layer-by-layer

Abstract

Citation Formats

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WSXM : A software for scanning probe microscopy and a tool for nanotechnology journal, January 2007

The role of different negatively charged layers in Ca10(Fe1-xPtxAs)10(Pt3+yAs8) and superconductivity at 30 K in electron-doped (Ca0.8La0.2)10(FeAs)10(Pt3As8) text, January 2012

Evidence for a preformed Cooper pair model in the pseudogap spectra of a Ca10(Pt4As8)(Fe2As2)5 single crystal with a nodal superconducting gap journal, March 2019

Title: Interrogating the superconductor Ca-₁₀(Pt₄As₈)(Fe_2-xPt_xAs₂)₅ Layer-by-layer

LiFeAs: An intrinsic FeAs-based superconductor with $T_{c} = 18 K$
journal, August 2008

Iron-Based Layered Superconductor La[O _1- _x F _x ]FeAs ( x = 0.05−0.12) with T _c = 26 K
journal, March 2008

Superconductivity Induced by Co-Doping in Quaternary Fluoroarsenide CaFeAsF
journal, November 2008

Superconductivity at 38 K in the Iron Arsenide $({Ba}_{1 - x} K_{x}) {Fe}_{2} {As}_{2}$
journal, September 2008

Determination of anisotropic $H_{c 2}$ up to 60 T in ${Ba}_{0.55} K_{0.45} {Fe}_{2} {As}_{2}$ single crystals
journal, December 2008

Small anisotropy, weak thermal fluctuations, and high field superconductivity in Co-doped iron pnictide Ba(Fe1−xCox)2As2
journal, February 2009

Nearly isotropic superconductivity in (Ba,K)Fe2As2
journal, January 2009

Anisotropic upper critical field and possible Fulde-Ferrel-Larkin-Ovchinnikov state in the stoichiometric pnictide superconductor LiFeAs
journal, February 2011

High-field phase-diagram of Fe arsenide superconductors
journal, May 2009

Superconductivity at 38 K in Iron-Based Compound with Platinum–Arsenide Layers Ca ₁₀ (Pt ₄ As ₈ )(Fe _{2- x} Pt _x As ₂ ) ₅
journal, September 2011

Superconductivity up to 35 K in the Iron Platinum Arsenides (CaFe1−xPtxAs)10Pt4−yAs8 with Layered Structures
journal, August 2011

High Tc electron doped Ca10(Pt3As8)(Fe2As2)5 and Ca10(Pt4As8)(Fe2As2)5 superconductors with skutterudite intermediary layers
journal, October 2011

Role of different negatively charged layers in Ca $_{10}$ (FeAs) $_{10} ($ Pt $_{4}$ As $_{8}$ ) and superconductivity at 30 K in electron-doped (Ca $_{0.8}$ La $_{0.2}$ ) $_{10}$ (FeAs) $_{10}$ (Pt $_{3}$ As $_{8}$ )
journal, August 2012

First-principles study of Ca–Fe–Pt–As-type iron-based superconductors
journal, January 2013

Ab initio study of the nature of the chemical bond and electronic structure of the layered phase Ca10(Pt4As8)(Fe2As2)5 as a parent system in the search for new superconducting iron-containing materials
journal, November 2011

Electronic structure of Ca $_{10}$ (Pt $_{4}$ As $_{8}$ )(Fe $_{2 - x}$ Pt $_{x}$ As $_{2}$ ) $_{5}$ with metallic Pt $_{4}$ As $_{8}$ layers: An angle-resolved photoemission spectroscopy study
journal, September 2013

${Sr}_{3} {Sc}_{2} {Fe}_{2} {As}_{2} O_{5}$ as a possible parent compound for FeAs-based superconductors
journal, January 2009

Transition of stoichiometric ${Sr}_{2} {VO}_{3} FeAs$ to a superconducting state at 37.2 K
journal, June 2009

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

Role of Antiferromagnetic Ordering in the ( $1 \times 2$ ) Surface Reconstruction of $Ca {({Fe}_{1 - x} {Co}_{x})}_{2} {As}_{2}$
journal, February 2014

Measurement of a Sign-Changing Two-Gap Superconducting Phase in Electron-Doped $Ba ({Fe}_{1 - x} {Co}_{x})_{2} {As}_{2}$ Single Crystals Using Scanning Tunneling Spectroscopy
journal, February 2011

Scanning tunneling spectroscopy of ${SmFeAsO}_{0.85}$ : Possible evidence for $d$ -wave order-parameter symmetry
journal, September 2008

Scanning Tunneling Spectroscopy and Vortex Imaging in the Iron Pnictide Superconductor ${BaFe}_{1.8} {Co}_{0.2} {As}_{2}$
journal, March 2009

Nanoscale superconducting-gap variations and lack of phase separation in optimally doped ${BaFe}_{1.86} {Co}_{0.14} {As}_{2}$
journal, June 2009

Pseudogap-less high-T _c superconductivity in BaCo _x Fe _2−x As ₂
journal, December 2010

$\sqrt{2} \times \sqrt{2}$ structure and charge inhomogeneity at the surface of superconducting ${BaFe}_{2 - x} {Co}_{x} {As}_{2}$ $(x = 0 - 0.32)$
journal, March 2010

Dopant clustering, electronic inhomogeneity, and vortex pinning in iron-based superconductors
journal, June 2013

Evolution of High-Temperature Superconductivity from a Low- $T_{c}$ Phase Tuned by Carrier Concentration in FeSe Thin Flakes
journal, February 2016

WSXM : A software for scanning probe microscopy and a tool for nanotechnology
journal, January 2007

Iron-Based Layered Superconductor La[O _1- _x F _x ]FeAs ( x = 0.05−0.12) with T _c = 26 K
journal, March 2008

Superconductivity Induced by Co-Doping in Quaternary Fluoroarsenide CaFeAsF
journal, November 2008

WSXM : A software for scanning probe microscopy and a tool for nanotechnology
journal, January 2007

The role of different negatively charged layers in Ca10(Fe1-xPtxAs)10(Pt3+yAs8) and superconductivity at 30 K in electron-doped (Ca0.8La0.2)10(FeAs)10(Pt3As8)
text, January 2012

Evidence for a preformed Cooper pair model in the pseudogap spectra of a Ca10(Pt4As8)(Fe2As2)5 single crystal with a nodal superconducting gap
journal, March 2019