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Author

K. Ackermann

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Preprint Oct 2026

Anisotropic magneto-elastic coupling in the quasi-2D Ising magnet Li$_2$FeSiO$_4$ and thermodynamic signature of low-energy orbital excitations

The relevance of spin, lattice and orbital degrees of freedom in the quasi-2D Ising-like magnet Li$_2$FeSiO$_4$ is demonstrated by thermal expansion and specific heat measurements supported by numerical studies. By means of thermodynamic and Gr\"uneisen analysis, we separate the orbital signatures and quantify the ener...

W. Hergett, K. Ackermann, S. Spachmann et al. · 0 citations

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