TY - JOUR
T1 - CeIr 3
T2 - Superconductivity in a phase based on tetragonally close packed clusters
AU - Górnicka, Karolina
AU - Carnicom, Elizabeth M.
AU - Gołab, Sylwia
AU - Łapiński, Marcin
AU - Wiendlocha, Bartłomiej
AU - Xie, Weiwei
AU - Kaczorowski, Dariusz
AU - Cava, Robert J.
AU - Klimczuk, Tomasz
N1 - Funding Information:
This work was supported by the Ministry of Science and Higher Education (Poland) under project DI2016 020 546 ('Diamentowy Grant'). Research performed at the AGH-UST was supported by the National Science Center (Poland), project No. 2017/26/E/ST3/00 119. The materials synthesis and powder x-ray diffraction work at Princeton University was supported by the US Department of Energy, Division of Basic Energy Sciences, grant DE-FG02-98ER45706
Funding Information:
This work was supported by the Ministry of Science and Higher Education (Poland) under project DI2016 020 546 (‘Diamentowy Grant’). Research performed at the AGH-UST was supported by the National Science Center (Poland), project No. 2017/26/E/ST3/00 119. The materials synthesis and powder x-ray diffraction work at Princeton University was supported by the US Department of Energy, Division of Basic Energy Sciences, grant DE-FG02-98ER45706.
Publisher Copyright:
© 2019 IOP Publishing Ltd.
PY - 2019/2
Y1 - 2019/2
N2 - We present the crystallographic analysis, superconducting and spectroscopic characterization, and theoretical modeling of CeIr 3 . Lattice parameters a = 5.2945(1) Å and c = 26.219(1) Å are found for the R-3m symmetry crystal structure, which are close to the literature values. CeIr 3 is a moderate type-II superconductor (κ GL = 17, λ e-p = 0.65) below 2.5 K. Ce ions exhibit a strongly intermediate valence character as evidenced by x-ray photoelectron spectroscopy. The normal state magnetic susceptibility is weakly temperature dependent and follows the inter-configuration fluctuation model with a singlet Ce-4 f 0 ground state. Theoretical calculations support a non-magnetic ground state of the system and reveal that Ir-5d states are dominant at the Fermi level.
AB - We present the crystallographic analysis, superconducting and spectroscopic characterization, and theoretical modeling of CeIr 3 . Lattice parameters a = 5.2945(1) Å and c = 26.219(1) Å are found for the R-3m symmetry crystal structure, which are close to the literature values. CeIr 3 is a moderate type-II superconductor (κ GL = 17, λ e-p = 0.65) below 2.5 K. Ce ions exhibit a strongly intermediate valence character as evidenced by x-ray photoelectron spectroscopy. The normal state magnetic susceptibility is weakly temperature dependent and follows the inter-configuration fluctuation model with a singlet Ce-4 f 0 ground state. Theoretical calculations support a non-magnetic ground state of the system and reveal that Ir-5d states are dominant at the Fermi level.
KW - Crystal structure
KW - Intermetallic compounds
KW - Superconductivity
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U2 - 10.1088/1361-6668/aaf48f
DO - 10.1088/1361-6668/aaf48f
M3 - Article
AN - SCOPUS:85062461963
SN - 0953-2048
VL - 32
JO - Superconductor Science and Technology
JF - Superconductor Science and Technology
IS - 2
M1 - 025008
ER -