@article{ab0e1163cf95494c82db1ad41be3de5c,
title = "Stripe antiferromagnetism and disorder in the Mott insulator NaFe1-xCuxAs (x{\^a}‰0.5)",
abstract = "Neutron scattering measurements have demonstrated that the heavily Cu doped NaFe1-xCuxAs compound behaves like a Mott insulator exhibiting both real-space Fe-Cu stripes and antiferromagnetism below a Ne{\'e}l temperature for x{\^a}‰0.5. We have investigated the evolution of structural and magnetic ordering using Na23 and As75 NMR for single crystals (x = 0.39 and 0.48), confirming antiferromagnetism in the form of magnetic stripes. We show that end-chain defects in these stripes are the principal source of magnetic disorder and are responsible for cluster spin-glass transitions in both compounds, in the latter case coexistent with antiferromagnetism. Aided by our numerical simulation of the As75 spectra, we show that a staggered magnetization at the Fe sites is induced by nonmagnetic Cu dopants.",
author = "Yizhou Xin and Ingrid Stolt and Yu Song and Pengcheng Dai and Halperin, {W. P.}",
note = "Funding Information: We thank W. Wang and C. Cao for their contributions to the crystal growth and characterization. The NMR spectrometer, a MagRes2000 wideband spectrometer system, was designed by A. P. Reyes at the National High Magnetic Field Laboratory (NHMFL). The home-built continuous-flow cryostat was designed by J. A. Lee at Northwestern University. Research was supported by the US Department of Energy (DOE), Office of Basic Energy Sciences (BES), Division of Material Sciences and Engineering, under Awards No. DE-FG02-05ER46248 (W.P.H.) and No. DE-FG02-05ER46202 (P.D.) and the NHMFL by NSF and the state of Florida. The single-crystal growth efforts at Rice were supported by the US DOE, BES, under Grant No. DE-SC0012311. Part of the materials work at Rice was supported by the Robert A. Welch Foundation under Grant No. C-1839. Publisher Copyright: {\textcopyright} 2020 American Physical Society.",
year = "2020",
month = feb,
day = "1",
doi = "10.1103/PhysRevB.101.064410",
language = "English (US)",
volume = "101",
journal = "Physical Review B-Condensed Matter",
issn = "0163-1829",
publisher = "American Institute of Physics",
number = "6",
}