Strongly correlated ladders in K-doped $p$-terphenyl crystals

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 inter-ladder coupling the system may exhibit 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 presence of three-dimensional coupling as well as for novel superconductivity.

6 pages main text + 3 pages supplementary information, 4 figures main text

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Cited by in corpus (2)

• Luther-Emery liquid and dominant singlet superconductivity in the hole-doped Haldane spin-1 chain
• Lifshitz transition in the phase diagram of two-leg $t$-$J$ ladder systems at low filling