Charge order and low frequency spin dynamics in lanthanum cuprates revealed by Nuclear Magnetic Resonance

H. J. Grafe*, N. J. Curro, Ben-Li Young, A. Vyalikh, J. Vavilova, G. D. Gu, M. Hücker, B. Büchner

*Corresponding author for this work

研究成果: Article同行評審

15 引文 斯高帕斯(Scopus)

摘要

We report detailed 17O, 139La, and 63,65Cu Nuclear Magnetic Resonance (NMR) and Nuclear Quadrupole Resonance (NQR) measurements in a stripe ordered La1.875Ba0.125CuO4 single crystal and in oriented powder samples of La1.8-xEu0.2SrxCuO4. We observe a partial wipeout of the 17O NMR intensity and a simultaneous drop of the 17O electric field gradient (EFG) at low temperatures where the spin stripe order sets in. In contrast, the 63,65Cu intensity is completely wiped out at the same temperature. The drop of the 17O quadrupole frequency is compatible with a charge stripe order. The 17O spin lattice relaxation rate shows a peak similar to that of the 139La, which is of magnetic origin. This peak is doping dependent and is maximal at x ≈ 1/8.

原文English
頁(從 - 到)89-101
頁數13
期刊European Physical Journal: Special Topics
188
發行號1
DOIs
出版狀態Published - 22 十月 2010

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