Published December 8, 1986
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Journal Article
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Detection of ferromagnetic domains in a two-dimensional nuclear-spin system
Abstract
We observe magnetic ordering of the 3He spins at the surface of exfoliated graphite. In very low applied magnetic fields (≤3 G) we find new modes in the NMR resonance spectrum with the amplitude of these lines increasing sharply below 0.8 mK. We interpret our results in terms of a ferromagnetically aligned spin system, and conclude that there must be an anisotropy in the graphite planes.
Additional Information
©1986 The American Physical Society. Received 22 September 1986. We wish to thank C.M. Gould and P. Kumar for helpful discussions. Three of us (L.J.F., S.N.Y., and H.M.B.) are supported by the National Science Foundation through Grant No. DMR85-01090, and one of us (M.C.C.) through the National Science Foundation under Grant No. DMR84-12543. Another of us (A.L.T.) is supported by the Science and Engineering Research Council (U.K.) under Grant No. GR/C 08237.Files
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