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
TL;DR
This study combines neutron scattering and first principles calculations to reveal quasi-one-dimensional magnons in intermetallic CrSb2, highlighting its unique low-dimensional magnetic excitations and potential thermoelectric applications.
Contribution
It provides the first detailed experimental and theoretical analysis of magnetic excitations in CrSb2, demonstrating strongly one-dimensional antiferromagnetic interactions.
Findings
Magnetic interactions are strongly one-dimensional along the c-axis.
Spin wave dispersion indicates antiferromagnetic chains.
Magnetic anisotropy may enhance thermoelectric properties.
Abstract
We present inelastic neutron scattering measurements and first principles calculations examining the intermetallic marcasite CrSb2. 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 this material may be further interesting in that the magnetic anisotropy may enhance thermoelectric properties along particular crystallographic directions.
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