Quantum impurities in the two-dimensional spin one-half heisenberg antiferromagnet

O. P. Vajk, P. K. Mang, M. Greven, P. M. Gehring, J. W. Lynn

Research output: Contribution to journalArticlepeer-review

119 Scopus citations

Abstract

The study of randomness in low-dimensional quantum antiferromagnets is at the forefront of research in the field of strongly correlated electron systems, yet there have been relatively few experimental model systems. Complementary neutron scattering and numerical experiments demonstrate that the spin-diluted Heisenberg antiferromagnet La2Cu1-z(Zn,Mg)zO4 is an excellent model material for square-lattice site percolation in the extreme quantum limit of spin one-half. Measurements of the ordered moment and spin correlations provide important quantitative information for tests of theories for this complex quantum-impurity problem.

Original languageEnglish (US)
Pages (from-to)1691-1695
Number of pages5
JournalScience
Volume295
Issue number5560
DOIs
StatePublished - Mar 1 2002

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