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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:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [1];  [2]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [3];  [1]; ORCiD logo [1]; ORCiD logo [2]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Science (CNMS)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Neutron Scattering Division
Publication Date:
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. https://doi.org/10.1103/PhysRevB.100.104525.
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
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.
@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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