Physical Review Letters
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Uniaxial-Pressure Control of Excitonic Fluctuations and Monoclinic Distortions in ${\mathrm{Ta}}_{2}{\mathrm{NiSe}}_{5}$
Author(s): X. Shi, Y.-S. Zhang, D. Huang, M. Isobe, H. Takagi, B. Keimer, and A. V. Boris
Collective many-body effects are shown to enhance exciton fluctuations even when monoclinic distortions are diminished by uniaxial pressure, supporting the excitonic origin of the phase transition in Ta2NiSe5. [Phys. Rev. Lett. 135, 156503] Published Thu Oct 09, 2025