Unusual states in the Heisenberg model with competing interactions

A. V. Chubukov

doi:10.1088/0953-8984/2/19/012

Unusual states in the Heisenberg model with competing interactions

A. V. Chubukov

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

A phase diagram of the anisotropic Heisenberg model with competition between the nearest and the next-to-nearest neighbour exchange interactions is investigated by using the bosonisation scheme. An instability leading to a spontaneous dimerisation is found. The new 'superfluid' phases with both nonzero, though nonnominal, Z-magnetisation and broken symmetry in the XY-plane are detected in the anisotropic case.

Original language	English (US)
Article number	012
Pages (from-to)	4455-4470
Number of pages	16
Journal	Journal of Physics: Condensed Matter
Volume	2
Issue number	19
DOIs	https://doi.org/10.1088/0953-8984/2/19/012
State	Published - Dec 1 1990

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10.1088/0953-8984/2/19/012

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title = "Unusual states in the Heisenberg model with competing interactions",

abstract = "A phase diagram of the anisotropic Heisenberg model with competition between the nearest and the next-to-nearest neighbour exchange interactions is investigated by using the bosonisation scheme. An instability leading to a spontaneous dimerisation is found. The new 'superfluid' phases with both nonzero, though nonnominal, Z-magnetisation and broken symmetry in the XY-plane are detected in the anisotropic case.",

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AB - A phase diagram of the anisotropic Heisenberg model with competition between the nearest and the next-to-nearest neighbour exchange interactions is investigated by using the bosonisation scheme. An instability leading to a spontaneous dimerisation is found. The new 'superfluid' phases with both nonzero, though nonnominal, Z-magnetisation and broken symmetry in the XY-plane are detected in the anisotropic case.

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Unusual states in the Heisenberg model with competing interactions

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