Nuclear-magnetic-resonance evidence for charge inhomogeneity in stripe ordered La1.8-xEu0.2SrxCuO4 -: art. no. 017002
Nuclear-magnetic-resonance evidence for charge inhomogeneity in stripe ordered La1.8-xEu0.2SrxCuO4 -: art. no. 017002
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DOI：
10.1103/physrevlett.96.017002
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发表时间：
2006-01-13
影响因子：
8.6
通讯作者：
Büchner, B
中科院分区：
文献类型：
--
作者：
Grafe, HJ;Curro, NJ;Büchner, B
We report O-17 nuclear-magnetic-resonance (NMR) results in the stripe ordered La1.8-xEu0.2SrxCuO4 system. Below a temperature T(q)similar to 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.
