Neutron scattering study of the kagome metal Sc3Mn3Al7Si5
- URL: http://arxiv.org/abs/2104.13985v2
- Date: Tue, 5 Oct 2021 16:27:11 GMT
- Title: Neutron scattering study of the kagome metal Sc3Mn3Al7Si5
- Authors: X. Y. Li, D. Reig-i-Plessis, P. -F. Liu, S. Wu, B. -T. Wang, A. M.
Hallas, M. B. Stone, C. Broholm, M. C. Aronson
- Abstract summary: Sc3Mn3Al7Si5 is a rare example of a correlated metal in which the Mn moments form a kagome lattice.
We have performed inelastic neutron scattering measurements on Sc3Mn3Al7Si5, finding that phonon scattering dominates for energies from 20 - 50 meV.
A weak magnetic signal was detected at energies less than 10 meV, present only at the lowest temperatures.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Sc3Mn3Al7Si5 is a rare example of a correlated metal in which the Mn moments
form a kagome lattice. The absence of magnetic ordering to the lowest
temperatures suggests that geometrical frustration of magnetic interactions may
lead to strong magnetic fluctuations. We have performed inelastic neutron
scattering measurements on Sc3Mn3Al7Si5, finding that phonon scattering
dominates for energies from ~20 - 50 meV. These results are in good agreement
with ab initio calculations of the phonon dispersions and densities of states,
and as well reproduce the measured specific heat. A weak magnetic signal was
detected at energies less than ~10 meV, present only at the lowest
temperatures. The magnetic signal is broad and quasielastic, as expected for
metallic paramagnets.
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