skip to main content

DOE PAGESDOE PAGES

Title: Role of magnetism in superconductivity of BaFe 2As 2: Study of 5d Au-doped crystals

We investigate properties of BaFe 2As 2 (122) single crystals upon gold doping, which is the transition metal with the highest atomic weight. The Au substitution into the FeAs-planes of 122 crystal structure (Au-122) is only possible up to a small amount of ~3%. We find that 5d is more effective in reducing magnetism in 122 than its counter 3d Cu, and this relates to superconductivity. We provide evidence of short-range magnetic fluctuations and local lattice inhomogeneities that may prevent strong percolative superconductivity in Ba(Fe 1-xAu x)2As 2.
Authors:
 [1] ;  [1] ;  [1] ;  [2] ;  [2] ;  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Univ. of Florida, Gainesville, FL (United States)
Publication Date:
Grant/Contract Number:
AC05-00OR22725; FG02-86ER45268
Type:
Accepted Manuscript
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 92; Journal Issue: 9; Journal ID: ISSN 1098-0121
Publisher:
American Physical Society (APS)
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
OSTI Identifier:
1286899
Alternate Identifier(s):
OSTI ID: 1224601

Li, Li, Cao, Huibo, McGuire, Michael A., Kim, J. S., Stewart, G. R., and Sefat, Athena Safa. Role of magnetism in superconductivity of BaFe2As2: Study of 5d Au-doped crystals. United States: N. p., Web. doi:10.1103/PhysRevB.92.094504.
Li, Li, Cao, Huibo, McGuire, Michael A., Kim, J. S., Stewart, G. R., & Sefat, Athena Safa. Role of magnetism in superconductivity of BaFe2As2: Study of 5d Au-doped crystals. United States. doi:10.1103/PhysRevB.92.094504.
Li, Li, Cao, Huibo, McGuire, Michael A., Kim, J. S., Stewart, G. R., and Sefat, Athena Safa. 2015. "Role of magnetism in superconductivity of BaFe2As2: Study of 5d Au-doped crystals". United States. doi:10.1103/PhysRevB.92.094504. https://www.osti.gov/servlets/purl/1286899.
@article{osti_1286899,
title = {Role of magnetism in superconductivity of BaFe2As2: Study of 5d Au-doped crystals},
author = {Li, Li and Cao, Huibo and McGuire, Michael A. and Kim, J. S. and Stewart, G. R. and Sefat, Athena Safa},
abstractNote = {We investigate properties of BaFe2As2 (122) single crystals upon gold doping, which is the transition metal with the highest atomic weight. The Au substitution into the FeAs-planes of 122 crystal structure (Au-122) is only possible up to a small amount of ~3%. We find that 5d is more effective in reducing magnetism in 122 than its counter 3d Cu, and this relates to superconductivity. We provide evidence of short-range magnetic fluctuations and local lattice inhomogeneities that may prevent strong percolative superconductivity in Ba(Fe1-xAux)2As2.},
doi = {10.1103/PhysRevB.92.094504},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 9,
volume = 92,
place = {United States},
year = {2015},
month = {9}
}