@article{de086873243a43dc91fed022a5d1d4f1,
title = "Charge density wave behavior and order-disorder in the antiferromagnetic metallic series Eu(Ga1-x Alx)4",
abstract = "The solid solution Eu(Ga1-xAlx)4 was grown in single crystal form to reveal a rich variety of crystallographic, magnetic, and electronic properties that differ from the isostructural end compounds EuGa4 and EuAl4, despite the similar covalent radii and electronic configurations of Ga and Al. Here we report the onset of magnetic spin reorientation and metamagnetic transitions for x=0-1 evidenced by magnetization and temperature-dependent specific heat measurements. TN changes nonmonotonously with x, and it reaches a maximum around 20 K for x=0.50, where the a lattice parameter also shows an extreme (minimum) value. Anomalies in the temperature-dependent resistivity consistent with charge density wave behavior exist only for x=0.50 and 1. Density functional theory calculations show increased polarization between the Ga-Al covalent bonds in the x=0.50 structure compared to the end compounds, such that crystallographic order and chemical pressure are proposed as the causes of the charge density wave behavior.",
author = "Macy Stavinoha and Cooley, {Joya A.} and Minasian, {Stefan G.} and McQueen, {Tyrel M.} and Kauzlarich, {Susan M.} and Huang, {C. L.} and E. Morosan",
note = "Funding Information: The authors would like to thank W. Guo, A. Hallas, M. Brando, and F. Steglich for fruitful discussions and N. Botto for performing EMPA measurements. M.S., C.-L.H., and E.M. acknowledge support from the Gordon and Betty Moore Foundation EPiQS initiative through Grant No. GBMF 4417. This paper is funded in part by a QuantEmX grant from ICAM and the Gordon and Betty Moore Foundation through Grant No. GBMF5305 to M.S. The work performed at the University of California, Davis, was supported by Grant No. NSF-DMR-1709382. S.G.M. was supported by the Director, Office of Science, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Biosciences Heavy Element Chemistry Program of the U.S. Department of Energy (DOE) at LBNL under Contract No. DE-AC02-05CH11231. Eu M 5 , 4 -edge spectra described in this paper were measured at the Canadian Light Source, which is supported by the Canada Foundation for Innovation, Natural Sciences and Engineering Research Council of Canada, the University of Saskatchewan, the Government of Saskatchewan, Western Economic Diversification Canada, the National Research Council Canada, and the Canadian Institutes of Health Research. T.M.M. acknowledges support from the Johns Hopkins University Catalyst Award and a David and Lucile Packard Foundation Fellowship for Science and Engineering. Publisher Copyright: {\textcopyright} 2018 American Physical Society.",
year = "2018",
month = may,
day = "23",
doi = "10.1103/PhysRevB.97.195146",
language = "English",
volume = "97",
journal = "Physical Review B",
issn = "2469-9950",
publisher = "American Physical Society",
number = "19",
}