Phys. Rev. Lett. 96, 017002 (2006) [4 pages]Nuclear-Magnetic-Resonance Evidence for Charge Inhomogeneity in Stripe Ordered La1.8-xEu0.2SrxCuO4Received 16 February 2005; revised 6 September 2005; published 3 January 2006 We report 17O nuclear-magnetic-resonance (NMR) results in the stripe ordered La1.8-xEu0.2SrxCuO4 system. Below a temperature Tq∼80 K, the local electric field gradient and the absolute intensity of the NMR signal of the planar O site exhibit a dramatic decrease. We interpret these results as microscopic evidence for a spatially inhomogeneous charge distribution, where the NMR signal from O sites in the domain walls of the spin density modulation are wiped out due to large hyperfine fields, and the remaining signal arises from the intervening Mott insulating regions. © 2006 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.96.017002
DOI:
10.1103/PhysRevLett.96.017002
PACS:
74.72.Dn, 75.10.Nr, 76.60.−k
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