DOAJ Open Access 2023

Understanding temperature-dependent SU(3) spin dynamics in the S = 1 antiferromagnet Ba2FeSi2O7

Seung-Hwan Do Hao Zhang David A. Dahlbom Travis J. Williams V. Ovidiu Garlea +7 lainnya

Abstrak

Abstract Quantum magnets admit more than one classical limit and N-level systems with strong single-ion anisotropy are expected to be described by a classical approximation based on SU(N) coherent states. Here we test this hypothesis by modeling finite temperature inelastic neutron scattering (INS) data of the effective spin-one antiferromagnet Ba2FeSi2O7. The measured dynamic structure factor is calculated with a generalized Landau-Lifshitz dynamics for SU(3) spins. Unlike the traditional classical limit based on SU(2) coherent states, the results obtained with classical SU(3) spins are in good agreement with the measured temperature dependent spectrum. The SU(3) approach developed here provides a general framework to understand the broad class of materials comprising weakly coupled antiferromagnetic dimers, trimers, or tetramers, and magnets with strong single-ion anisotropy.

Topik & Kata Kunci

Materials of engineering and construction. Mechanics of materials Atomic physics. Constitution and properties of matter

Penulis (12)

Seung-Hwan Do

Hao Zhang

David A. Dahlbom

Travis J. Williams

V. Ovidiu Garlea

Tao Hong

Tae-Hwan Jang

Sang-Wook Cheong

Jae-Hoon Park

Kipton Barros

Cristian D. Batista

Andrew D. Christianson

Format Sitasi

APA MLA BibTeX

Do, S., Zhang, H., Dahlbom, D.A., Williams, T.J., Garlea, V.O., Hong, T. et al. (2023). Understanding temperature-dependent SU(3) spin dynamics in the S = 1 antiferromagnet Ba2FeSi2O7. https://doi.org/10.1038/s41535-022-00526-7

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Informasi Jurnal

Tahun Terbit: 2023
Sumber Database: DOAJ
DOI: 10.1038/s41535-022-00526-7
Akses: Open Access ✓