
Experimental observation of repulsively bound three-magnon states and bound magnon pairs in the Ising-like chain antiferromagnet BaCo2V2O8, demonstrating the existence of stable composite objects formed by repulsive interactions in condensed matter systems.


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Comparison of terahertz spectroscopy measurements with theoretical results for the Heisenberg–Ising chain antiferromagnet demonstrates the existence of repulsively bound magnons in large transverse fields below the quantum critical point.

Experimental observation of repulsively bound magnons - Nature

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Experimental Observation of Repulsively Bound Magnons in Antiferromagnetic Spin Chains
