Local superconductivity in vanadium iron arsenide

Sefat, Athena S.; Nguyen, Giang D.; Parker, David S.; Fu, Mingming M.; Zou, Qiang; Li, An-Ping; Cao, Huibo B.; Sanjeewa, Liurukara Duminda; Li, Li; Gai, Zheng

doi:10.1103/PhysRevB.100.104525

Title: Local superconductivity in vanadium iron arsenide

Abstract

We investigate the chemical substitution of group 5 into BaFe₂As₂ (“122”) iron arsenide, in the effort to understand why Fe-site hole doping of this compound (e.g., using group 5 or 6) does not yield bulk superconductivity. We find an increase in the c-lattice parameter of the BaFe₂As₂ with the substitution of V, Nb, or Ta; the reduction in c predicts the lack of bulk superconductivity [Konzen and Sefat, J. Phys.: Condens. Matter 29, 083001 (2017)] that is confirmed here through transport and magnetization results. However, our spectroscopy measurements find a coexistence of antiferromagnetic and local superconducting nanoscale regions in V-122, observed in a transition-metal hole-doped iron arsenide. In BaFe₂As₂, there is a complex connection between local parameters such as composition and lattice strain, average lattice details, and the emergence of bulk quantum states such as superconductivity and magnetism.

Authors:

^[1];

^[2];

^[1]; Fu, Mingming M. ^[2];

^[2];

^[3]; Sanjeewa, Liurukara Duminda ^[1];

^[1];

^[2]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Science (CNMS)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Neutron Scattering Division

Publication Date:: 2019-09-26

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

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

OSTI Identifier:: 1606885

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review B

Additional Journal Information:: Journal Volume: 100; Journal Issue: 10; 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


                    Sefat, Athena S., Nguyen, Giang D., Parker, David S., Fu, Mingming M., Zou, Qiang, Li, An-Ping, Cao, Huibo B., Sanjeewa, Liurukara Duminda, Li, Li, and Gai, Zheng. Local superconductivity in vanadium iron arsenide.  United States: N. p., 2019. 
Web.  doi:10.1103/PhysRevB.100.104525.

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                    Sefat, Athena S., Nguyen, Giang D., Parker, David S., Fu, Mingming M., Zou, Qiang, Li, An-Ping, Cao, Huibo B., Sanjeewa, Liurukara Duminda, Li, Li, & Gai, Zheng. Local superconductivity in vanadium iron arsenide.  United States.  https://doi.org/10.1103/PhysRevB.100.104525

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                    Sefat, Athena S., Nguyen, Giang D., Parker, David S., Fu, Mingming M., Zou, Qiang, Li, An-Ping, Cao, Huibo B., Sanjeewa, Liurukara Duminda, Li, Li, and Gai, Zheng. Thu .  
"Local superconductivity in vanadium iron arsenide".  United States.  https://doi.org/10.1103/PhysRevB.100.104525.  https://www.osti.gov/servlets/purl/1606885.

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@article{osti_1606885,

  title        = {Local superconductivity in vanadium iron arsenide},

  author       = {Sefat, Athena S. and Nguyen, Giang D. and Parker, David S. and Fu, Mingming M. and Zou, Qiang and Li, An-Ping and Cao, Huibo B. and Sanjeewa, Liurukara Duminda and Li, Li and Gai, Zheng},

  abstractNote = {We investigate the chemical substitution of group 5 into BaFe2As2 (“122”) iron arsenide, in the effort to understand why Fe-site hole doping of this compound (e.g., using group 5 or 6) does not yield bulk superconductivity. We find an increase in the c-lattice parameter of the BaFe2As2 with the substitution of V, Nb, or Ta; the reduction in c predicts the lack of bulk superconductivity [Konzen and Sefat, J. Phys.: Condens. Matter 29, 083001 (2017)] that is confirmed here through transport and magnetization results. However, our spectroscopy measurements find a coexistence of antiferromagnetic and local superconducting nanoscale regions in V-122, observed in a transition-metal hole-doped iron arsenide. In BaFe2As2, there is a complex connection between local parameters such as composition and lattice strain, average lattice details, and the emergence of bulk quantum states such as superconductivity and magnetism.},

  doi          = {10.1103/PhysRevB.100.104525},

  journal      = {Physical Review B},

  number       = 10,

  volume       = 100,

  place        = {United States},

  year         = {2019},

  month        = {9}

}

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Title: Local superconductivity in vanadium iron arsenide

Abstract

Citation Formats

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Quasiparticle Interference in the Spin-Density Wave Phase of Iron-Based Superconductors journal, June 2010

Tuning the ground state of BaFe 2 As 2 : Phase diagrams and empirical trends journal, August 2011

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Strain induced superconductivity in the parent compound BaFe2As2 journal, December 2013

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Spin-filter Josephson junctions
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Quasiparticle Interference in the Spin-Density Wave Phase of Iron-Based Superconductors
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Tuning the ground state of BaFe ₂ As ₂ : Phase diagrams and empirical trends
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Superconducting and Ferromagnetic Phases Induced by Lattice Distortions in Stoichiometric ${SrFe}_{2} {As}_{2}$ Single Crystals
journal, July 2009

Problems with reconciling density functional theory calculations with experiment in ferropnictides
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