Exotic magnetic states in Heisenberg antiferromagnetism (invited) (abstract)

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Abstract

When quantum effects are small, Heisenberg antiferromagnets have a Néel ordered ground state, but strong zero point fluctuations can lead to new “exotic” spin liquid ground states without long range Néel order. These effects are strongest in low dimensions and frustrated systems, and always occur in one dimension. The nature of the new ground state can depend on whether the microscopic spins have integer or half integer S. As an example of such systems the rich phase diagram of the one dimensional S=1 Heisenberg antiferromagnet with additional biquadratic exchange and uniaxial on site anisotropy will be discussed in detail.

Original languageEnglish (US)
Number of pages1
JournalJournal of Applied Physics
Volume69
Issue number8
DOIs
StatePublished - Apr 15 1991
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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