S=2 quasi-one-dimensional spin waves in CrCl2

M. B. Stone; G. Ehlers; G. E. Granroth

doi:10.1103/PhysRevB.88.104413

S=2 quasi-one-dimensional spin waves in CrCl₂

M. B. Stone, G. Ehlers, G. E. Granroth

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Abstract

We examine the magnetic excitation spectrum in the S=2 Heisenberg antiferromagnet CrCl₂. Inelastic neutron scattering measurements on powder samples are able to determine the significant exchange interactions in this system. A large anisotropy gap is observed in the spectrum below the Néel temperature and the ratio of the two largest exchange constants is J_c/J_b=9.1±2.2. However, no sign of a gapped quantum spin liquid excitation was found in the paramagnetic phase.

Original language	English
Article number	104413
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	88
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevB.88.104413
State	Published - Sep 16 2013

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title = "S=2 quasi-one-dimensional spin waves in CrCl2",

abstract = "We examine the magnetic excitation spectrum in the S=2 Heisenberg antiferromagnet CrCl2. Inelastic neutron scattering measurements on powder samples are able to determine the significant exchange interactions in this system. A large anisotropy gap is observed in the spectrum below the N{\'e}el temperature and the ratio of the two largest exchange constants is Jc/Jb=9.1±2.2. However, no sign of a gapped quantum spin liquid excitation was found in the paramagnetic phase.",

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AU - Ehlers, G.

AU - Granroth, G. E.

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N2 - We examine the magnetic excitation spectrum in the S=2 Heisenberg antiferromagnet CrCl2. Inelastic neutron scattering measurements on powder samples are able to determine the significant exchange interactions in this system. A large anisotropy gap is observed in the spectrum below the Néel temperature and the ratio of the two largest exchange constants is Jc/Jb=9.1±2.2. However, no sign of a gapped quantum spin liquid excitation was found in the paramagnetic phase.

AB - We examine the magnetic excitation spectrum in the S=2 Heisenberg antiferromagnet CrCl2. Inelastic neutron scattering measurements on powder samples are able to determine the significant exchange interactions in this system. A large anisotropy gap is observed in the spectrum below the Néel temperature and the ratio of the two largest exchange constants is Jc/Jb=9.1±2.2. However, no sign of a gapped quantum spin liquid excitation was found in the paramagnetic phase.

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U2 - 10.1103/PhysRevB.88.104413

DO - 10.1103/PhysRevB.88.104413

M3 - Article

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JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 10

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S=2 quasi-one-dimensional spin waves in CrCl₂

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