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Title: Ferrimagnetic spin waves in honeycomb and triangular layers of Mn 3 Si 2 Te 6

Journal Article · · Physical Review. B

A detailed analysis of the ferrimagnetic ground state of Mn3Si2Te6 has been performed using inelastic neutron scattering. Although the proposed valence of the nominal Mn2+ ions would have quenched orbital angular momentum, a significant exchange anisotropy exists in Mn3Si2Te6. This apparent exchange anisotropy is a manifestation of a weak spin-orbit coupling in the layered material. We employ a detailed simulation of the spin-wave spectrum coupling traditional refinement of dispersion parameters to image analysis techniques, while including Monte Carlo simulations of the instrumental resolution to accurately identify the exchange couplings to the third nearest neighbor. Furthermore, an independent validation of our results is made by comparing our final Hamiltonian to heat capacity measurements.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1883956
Journal Information:
Physical Review. B, Journal Name: Physical Review. B Journal Issue: 21 Vol. 105; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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