Emergent magnetic behavior in the frustrated Yb3 Ga5 O12 garnet

Lise Ørduk Sandberg, Richard Edberg, Ingrid Marie Berg Bakke, Kasper S. Pedersen, Monica Ciomaga Hatnean, Geetha Balakrishnan, Lucile Mangin-Thro, Andrew Wildes, B. Fåk, Georg Ehlers, Gabriele Sala, Patrik Henelius, Kim Lefmann, Pascale P. Deen*

*Korresponderande författare för detta arbete

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

9 Citeringar (Scopus)

Sammanfattning

We report neutron scattering, magnetic susceptibility and Monte Carlo theoretical analysis to verify the short-range nature of the magnetic structure and spin-spin correlations in a Yb3Ga5O12 single crystal. The quantum spin state of Yb3+ in Yb3Ga5O12 is verified. The quantum spins organize into a short-ranged emergent director state for T<0.6 K derived from anisotropy and near-neighbor exchange. We derive the magnitude of the near-neighbor exchange interactions 0.6<J1<0.7K,J2=0.12 K and the magnitude of the dipolar exchange interaction, D, in the range 0.18<D<0.21 K. Certain aspects of the broad experimental dataset can be modeled using a J1D model with ferromagnetic near-neighbor spin-spin correlations while other aspects of the data can be accurately reproduced using a J1J2D model with antiferromagnetic near-neighbor spin-spin correlation. As such, although we do not quantify all the relevant exchange interactions, we nevertheless provide a strong basis for the understanding of the complex Hamiltonian required to fully describe the magnetic state of Yb3Ga5O12.

OriginalspråkEngelska
Artikelnummer064425
TidskriftPhysical Review B
Volym104
Nummer6
DOI
StatusPublicerad - 1 aug. 2021
MoE-publikationstypA1 Tidskriftsartikel-refererad

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