17O hyperfine anomalies in La2CuO4

R. E. Walstedt, S. W. Cheong, J. Sunstrom, M. Greenblatt

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Magnetization data and NMR spectra for both 17O and 139La in La2CuO4 are reported for temperatures T ranging from 285 to 600 K. We find a small, positive paramagnetic state hyperfine coefficient C, corroborating earlier findings that C for the doped phase is not dominated by the Cu-O transferred coupling, contrary to simple models proposed up to now. Near and below TN the planar 17O shift is negative, highly anisotropic, and ˜100 times larger in magnitude. We propose a new and more complex magnetic structure in the ordered phase to account for these data.

Original languageEnglish (US)
Pages (from-to)2457-2460
Number of pages4
JournalPhysical review letters
Volume80
Issue number11
DOIs
StatePublished - 1998

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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