Quasi-one-dimensional magnons in an intermetallic marcasite

M. B. Stone; M. D. Lumsden; S. E. Nagler; D. J. Singh; J. He; B. C. Sales; D. Mandrus

doi:10.1103/PhysRevLett.108.167202

Quasi-one-dimensional magnons in an intermetallic marcasite

M. B. Stone, M. D. Lumsden, S. E. Nagler, D. J. Singh, J. He, B. C. Sales, D. Mandrus

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21 Scopus citations

Abstract

We present inelastic neutron scattering measurements and first principles calculations examining the intermetallic marcasite CrSb ₂. The observed spin-wave dispersion implies that the magnetic interactions are strongly one-dimensional with antiferromagnetic chains parallel to the crystalline c axis. Such low-dimensional excitations are unexpected in a semiconducting intermetallic system. Moreover, we observe a clear anisotropic thermal conductivity indicating that the magnetic anisotropy enhances thermoelectric properties along particular crystallographic directions.

Original language	English
Article number	167202
Journal	Physical Review Letters
Volume	108
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevLett.108.167202
State	Published - Apr 20 2012

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10.1103/PhysRevLett.108.167202

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abstract = "We present inelastic neutron scattering measurements and first principles calculations examining the intermetallic marcasite CrSb 2. The observed spin-wave dispersion implies that the magnetic interactions are strongly one-dimensional with antiferromagnetic chains parallel to the crystalline c axis. Such low-dimensional excitations are unexpected in a semiconducting intermetallic system. Moreover, we observe a clear anisotropic thermal conductivity indicating that the magnetic anisotropy enhances thermoelectric properties along particular crystallographic directions.",

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AU - He, J.

AU - Sales, B. C.

AU - Mandrus, D.

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N2 - We present inelastic neutron scattering measurements and first principles calculations examining the intermetallic marcasite CrSb 2. The observed spin-wave dispersion implies that the magnetic interactions are strongly one-dimensional with antiferromagnetic chains parallel to the crystalline c axis. Such low-dimensional excitations are unexpected in a semiconducting intermetallic system. Moreover, we observe a clear anisotropic thermal conductivity indicating that the magnetic anisotropy enhances thermoelectric properties along particular crystallographic directions.

AB - We present inelastic neutron scattering measurements and first principles calculations examining the intermetallic marcasite CrSb 2. The observed spin-wave dispersion implies that the magnetic interactions are strongly one-dimensional with antiferromagnetic chains parallel to the crystalline c axis. Such low-dimensional excitations are unexpected in a semiconducting intermetallic system. Moreover, we observe a clear anisotropic thermal conductivity indicating that the magnetic anisotropy enhances thermoelectric properties along particular crystallographic directions.

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Quasi-one-dimensional magnons in an intermetallic marcasite

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