In the highly frustrated disordered spin-1/2 J1-J2 Heisenberg model, the ground state is a valence bond glass whose collective singlet excitations yield a field-insensitive specific-heat anomaly.
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Partial Kondo screening arising from competition between kinetic energy, Kondo coupling, and magnetic frustration in the Kondo lattice model on the Shastry-Sutherland lattice produces robust magnetization plateaus at 1/6, 2/9, 1/4, 1/3, 1/2, 2/3, and 3/4 of saturation in rare-earth tetraborides.
Dielectric spectroscopy on NdMgAl11O19 distinguishes crystal-field excitations (gap 25.85 K) from field-tuned antiferromagnetic correlations in the ground-state Kramers doublet below 30 K.
citing papers explorer
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Valence Bond Glass and Glassy Spin Liquid in Disordered Frustrated Magnets
In the highly frustrated disordered spin-1/2 J1-J2 Heisenberg model, the ground state is a valence bond glass whose collective singlet excitations yield a field-insensitive specific-heat anomaly.
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Partial Kondo Screening Solves the Mystery of Rare Earth Tetraborides
Partial Kondo screening arising from competition between kinetic energy, Kondo coupling, and magnetic frustration in the Kondo lattice model on the Shastry-Sutherland lattice produces robust magnetization plateaus at 1/6, 2/9, 1/4, 1/3, 1/2, 2/3, and 3/4 of saturation in rare-earth tetraborides.
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Dielectric signatures of crystal-field and low-temperature correlated dynamics in NdMgAl11O19
Dielectric spectroscopy on NdMgAl11O19 distinguishes crystal-field excitations (gap 25.85 K) from field-tuned antiferromagnetic correlations in the ground-state Kramers doublet below 30 K.