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Spin excitations in an alternating quantum spin chain
We propose to measure the magnetic excitations in malachite, a mineral that contains S=1/2 alternating chains with an alternation parameter of J'/J=0.5, just in the middle... -
Persistent geometrical frustration in the distorted spinel lattice
The corner-shared network of tetrahedra is the most well-known lattice exhibiting geometrical frustation of AFM exchanges under cubic symmetry. Even when the lattice symmetry is...