Flat electronic bands from cooperative moir\'e and charge order

The formation of flat electronic bands from long-wavelength superperiodic moir\'e potentials in van der Waals heterostructures underpins the creation and control of a host of highly-tuneable correlated and topological phases. The underlying moir\'e periodicity is, however, typically considered a fixed property of the heterostructure. Here, we show how the development of a charge-density wave (CDW) in one of the constituent materials can create an emergent moir\'e periodicity, realising a superperiodic potential in TiSe$_2$/graphite epitaxial heterostructures with an order-of-magnitude longer wavelength than that expected from the normal-state lattice mismatch. We demonstrate how this drives the formation of a remarkably strong band flattening, which can be readily deactivated by carrier doping across the CDW phase transition, opening new prospects for engineering moir\'e matter by exploiting the rich many-body states of the parent compounds of 2D heterostructures.

• Publication year

  2025

• Venue

  Unknown venue

• Publication date

  2025-11-07

• Fields of study

  Physics

• Identifiers
  arXiv 2511.05648
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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