Sous J, Gadjieva NA, Nuckolls C, Reichman DR, Millis AJ. Strongly Correlated Ladders in K-Doped
p-Terphenyl Crystals.
Nano Lett 2021;
21:9573-9579. [PMID:
34761676 DOI:
10.1021/acs.nanolett.1c03236]
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Abstract
Potassium-doped terphenyl has recently attracted attention as a potential host for high-transition-temperature superconductivity. Here, we elucidate the many-body electronic structure of recently synthesized potassium-doped terphenyl crystals. We show that this system may be understood as a set of weakly coupled one-dimensional ladders. Depending on the strength of the interladder coupling, the system may exhibit insulating spin-gapped valence-bond solid or antiferromagnetic phases, both of which upon hole doping may give rise to superconductivity. This terphenyl-based ladder material serves as a new platform for investigating the fate of ladder phases in the presence of three-dimensional coupling as well as for novel superconductivity.
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