High-temperature magnetic correlations in the 2D S=1/2 antiferromagnet copper formate tetradeuterate

H.M. Rønnow; D.F. McMorrow; A. Harrison

doi:10.1103/PhysRevLett.82.3152

High-temperature magnetic correlations in the 2D S=1/2 antiferromagnet copper formate tetradeuterate

H.M. Rønnow
, D.F. McMorrow
, A. Harrison

Research output: Contribution to journal › Journal article › Research

Abstract

The temperature dependence of the structure factor S(k) of the instantaneous magnetic fluctuations in copper formate tetradeuterate has been investigated using neutron scattering techniques. Our data extend to unprecedently high temperatures (T similar to J) compared to the 2D exchange coupling. The correlation length xi and amplitude S-0 are in good agreement with the predictions for a 2D S = 1/2 Heisenberg antiferromagnet on a square lattice.

Original language	English
Journal	Physical Review Letters
Volume	82
Issue number	15
Pages (from-to)	3152-3155
ISSN	0031-9007
DOIs	https://doi.org/10.1103/PhysRevLett.82.3152
Publication status	Published - 1999

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title = "High-temperature magnetic correlations in the 2D S=1/2 antiferromagnet copper formate tetradeuterate",

abstract = "The temperature dependence of the structure factor S(k) of the instantaneous magnetic fluctuations in copper formate tetradeuterate has been investigated using neutron scattering techniques. Our data extend to unprecedently high temperatures (T similar to J) compared to the 2D exchange coupling. The correlation length xi and amplitude S-0 are in good agreement with the predictions for a 2D S = 1/2 Heisenberg antiferromagnet on a square lattice. ",

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AU - Rønnow, H.M.

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AU - Harrison, A.

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N2 - The temperature dependence of the structure factor S(k) of the instantaneous magnetic fluctuations in copper formate tetradeuterate has been investigated using neutron scattering techniques. Our data extend to unprecedently high temperatures (T similar to J) compared to the 2D exchange coupling. The correlation length xi and amplitude S-0 are in good agreement with the predictions for a 2D S = 1/2 Heisenberg antiferromagnet on a square lattice.

AB - The temperature dependence of the structure factor S(k) of the instantaneous magnetic fluctuations in copper formate tetradeuterate has been investigated using neutron scattering techniques. Our data extend to unprecedently high temperatures (T similar to J) compared to the 2D exchange coupling. The correlation length xi and amplitude S-0 are in good agreement with the predictions for a 2D S = 1/2 Heisenberg antiferromagnet on a square lattice.

KW - Nye funktionelle materialer

U2 - 10.1103/PhysRevLett.82.3152

DO - 10.1103/PhysRevLett.82.3152

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JO - Physical Review Letters

JF - Physical Review Letters

IS - 15

ER -

High-temperature magnetic correlations in the 2D S=1/2 antiferromagnet copper formate tetradeuterate

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