T.C. Huang, Y. Tokura, et al.
Applied Physics Letters
Paper
Discovery of a neutral-to-ionic phase transition in organic materials
Abstract
A systematic study of mixed stacked organic charge-transfer compounds shows that these materials are either neutral or ionic and that they range from being near the neutral-ionic boundary to being far away. Under pressure, several neutral compounds near this boundary are found to undergo a reversible phase transition to an ionic ground state. This is the first observation of a neutral-to-ionic transition in any kind of material. © 1981 The American Physical Society.
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