Low-temperature excitations in random two-dimensional antiferromagnets

M. F. Thorpe; R. Alben

doi:10.1088/0022-3719/9/13/015

Low-temperature excitations in random two-dimensional antiferromagnets

M. F. Thorpe, R. Alben

Arizona State University

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

50 Scopus citations

Abstract

A numerical method involving the time integration of equations of motion is developed for calculating response functions of antiferromagnets. The method is particularly useful in calculating dynamic response functions S(k, omega ) and can also be used to obtain densities of states. The technique is applied to the two-dimensional random antiferromagnets Rb₂Mn_0.5Ni _0.5F₄ and Rb₂Mn_cZn _1-cF₄. In the former case, good agreement is found with the recently measured S(k, omega ) and in the latter some interesting clustering effects that should be accessible experimentally are found.

Original language	English (US)
Article number	015
Pages (from-to)	2555-2568
Number of pages	14
Journal	Journal of Physics C: Solid State Physics
Volume	9
Issue number	13
DOIs	https://doi.org/10.1088/0022-3719/9/13/015
State	Published - Dec 1 1976

ASJC Scopus subject areas

Condensed Matter Physics
Engineering(all)
Physics and Astronomy(all)

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abstract = "A numerical method involving the time integration of equations of motion is developed for calculating response functions of antiferromagnets. The method is particularly useful in calculating dynamic response functions S(k, omega ) and can also be used to obtain densities of states. The technique is applied to the two-dimensional random antiferromagnets Rb2Mn0.5Ni 0.5F4 and Rb2MncZn 1-cF4. In the former case, good agreement is found with the recently measured S(k, omega ) and in the latter some interesting clustering effects that should be accessible experimentally are found.",

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AB - A numerical method involving the time integration of equations of motion is developed for calculating response functions of antiferromagnets. The method is particularly useful in calculating dynamic response functions S(k, omega ) and can also be used to obtain densities of states. The technique is applied to the two-dimensional random antiferromagnets Rb2Mn0.5Ni 0.5F4 and Rb2MncZn 1-cF4. In the former case, good agreement is found with the recently measured S(k, omega ) and in the latter some interesting clustering effects that should be accessible experimentally are found.

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Low-temperature excitations in random two-dimensional antiferromagnets

Abstract

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