https://doi.org/10.1140/epjb/s10051-025-00931-4
Regular Article - Solid State and Materials
Unidirectional charge correlations in hole-doped cuprates
1
Department of Physics and Material Science, Thapar Institute of Engineering and Technology, 147004, Patiala, Punjab, India
2
Department of Physics, POSTECH, 790-784, Pohang, Korea
Received:
4
January
2025
Accepted:
21
April
2025
Published online:
9
May
2025
We examine charge correlations and instabilities in the pseudogap phase of high-
cuprates modeled by d-density wave ordering. The latter has a gap symmetry similar to the one observed in the d-wave superconductor. We use t-J model to describe the charge correlations in the presence of electron–phonon interaction. Our finding suggests that the charge instability in the normal state dominates at an incommensurate wavevector along (1, 1) instead of (1, 0) for a realistic interaction parameter. The dominance at the diagonal wavevector is further enhanced if the coupling between electron and bond-buckling 
phonon is incorporated. On the other hand, a dominating charge-density correlation develops along (1, 0) at an incommensurate wavevector in the d-density wave ordered state in qualitative agreement with the experiments. The correlation is robustly enhanced along (1, 0) in the presence of phonon.
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© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
