Speaker
Description
Motivated by the growing effort to identify entangled quantum states in real materials, we investigate magnetic correlations across unprecedented energy and time scales in two archetypal frustrated spin-1/2 systems: a triangular-lattice antiferromagnet driven by geometric frustration, and a cubic-lattice antiferromagnet where frustration arises from quenched disorder. Both phases are realized in polymorphs of Ba₃CoNb₂O₉. Remarkably, we observe spin-liquid-like behavior in both cases, clearly distinct from classical long-range magnetic order or frozen spin-glass\ice states. These results provide the first direct time-domain evidence to address key open questions in quantum many-body physics (QMP), such as the reliability of long-time numerical predictions and the emergence of disorder-induced spin-liquid phases.
This poster highlights state-of-the-art approaches for probing real-time magnetic dynamics, combining complementary experimental methods with overlapping timescales: conventional Neutron Diffraction/Spectroscopy, Wide Angle Neutron Spin Echo, and Muon Spin Rotation. Our study provide new insights to QMP and point towards promising methodological development opportunities for the broader measurement-science community.
| Session | Magnetism |
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