Two-magnon excitations observed by neutron scattering in the two- dimensional spin-5/2 Heisenberg antiferromagnet Rb2MnF4

T  Huberman; R  Coldea; R A  Cowley; D A  Tennant; R L  Leheny; R J  Christianson; C D  Frost

doi:10.1103/PhysRevB.72.014413

Two-magnon excitations observed by neutron scattering in the two- dimensional spin-5/2 Heisenberg antiferromagnet Rb2MnF4

T Huberman, R Coldea, R A Cowley, D A Tennant, R L Leheny, R J Christianson, C D Frost

School of Physics and Astronomy

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

Abstract

The low-temperature magnetic excitations of the two-dimensional spin-5/2 square-lattice Heisenberg antiferromagnet Rb2MnF4 have been probed using pulsed inelastic neutron scattering. In addition to dominant sharp peaks identified with one-magnon excitations, a relatively weak continuum scattering is also observed at higher energies. This is attributed to neutron scattering by pairs of magnons and the observed intensities are consistent with predictions of spin wave theory.

Original language	English
Number of pages	9
Journal	Physical Review. B, Condensed matter and materials physics
Volume	72
DOIs	https://doi.org/10.1103/PhysRevB.72.014413
Publication status	Published - Jul 2005

Keywords

HIGH-ENERGY SPIN
SQUARE-LATTICE
ZERO-TEMPERATURE
EXCHANGE
DYNAMICS
LA2CUO4
K2NIF4
K2MNF4
MAGNON
WAVES

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10.1103/PhysRevB.72.014413

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title = "Two-magnon excitations observed by neutron scattering in the two- dimensional spin-5/2 Heisenberg antiferromagnet Rb2MnF4",

abstract = "The low-temperature magnetic excitations of the two-dimensional spin-5/2 square-lattice Heisenberg antiferromagnet Rb2MnF4 have been probed using pulsed inelastic neutron scattering. In addition to dominant sharp peaks identified with one-magnon excitations, a relatively weak continuum scattering is also observed at higher energies. This is attributed to neutron scattering by pairs of magnons and the observed intensities are consistent with predictions of spin wave theory.",

keywords = "HIGH-ENERGY SPIN, SQUARE-LATTICE, ZERO-TEMPERATURE, EXCHANGE, DYNAMICS, LA2CUO4, K2NIF4, K2MNF4, MAGNON, WAVES",

author = "T Huberman and R Coldea and Cowley, {R A} and Tennant, {D A} and Leheny, {R L} and Christianson, {R J} and Frost, {C D}",

year = "2005",

month = jul,

doi = "10.1103/PhysRevB.72.014413",

language = "English",

volume = "72",

journal = "Physical Review. B, Condensed matter and materials physics",

issn = "1098-0121",

publisher = "American Physical Society",

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TY - JOUR

T1 - Two-magnon excitations observed by neutron scattering in the two- dimensional spin-5/2 Heisenberg antiferromagnet Rb2MnF4

AU - Huberman, T

AU - Coldea, R

AU - Cowley, R A

AU - Tennant, D A

AU - Leheny, R L

AU - Christianson, R J

AU - Frost, C D

PY - 2005/7

Y1 - 2005/7

N2 - The low-temperature magnetic excitations of the two-dimensional spin-5/2 square-lattice Heisenberg antiferromagnet Rb2MnF4 have been probed using pulsed inelastic neutron scattering. In addition to dominant sharp peaks identified with one-magnon excitations, a relatively weak continuum scattering is also observed at higher energies. This is attributed to neutron scattering by pairs of magnons and the observed intensities are consistent with predictions of spin wave theory.

AB - The low-temperature magnetic excitations of the two-dimensional spin-5/2 square-lattice Heisenberg antiferromagnet Rb2MnF4 have been probed using pulsed inelastic neutron scattering. In addition to dominant sharp peaks identified with one-magnon excitations, a relatively weak continuum scattering is also observed at higher energies. This is attributed to neutron scattering by pairs of magnons and the observed intensities are consistent with predictions of spin wave theory.

KW - HIGH-ENERGY SPIN

KW - SQUARE-LATTICE

KW - ZERO-TEMPERATURE

KW - EXCHANGE

KW - DYNAMICS

KW - LA2CUO4

KW - K2NIF4

KW - K2MNF4

KW - MAGNON

KW - WAVES

U2 - 10.1103/PhysRevB.72.014413

DO - 10.1103/PhysRevB.72.014413

M3 - Article

SN - 1098-0121

VL - 72

JO - Physical Review. B, Condensed matter and materials physics

JF - Physical Review. B, Condensed matter and materials physics

ER -

Two-magnon excitations observed by neutron scattering in the two- dimensional spin-5/2 Heisenberg antiferromagnet Rb2MnF4

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Keywords

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