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ZENODO
Dataset . 2025
License: CC BY
Data sources: ZENODO
ZENODO
Dataset . 2025
License: CC BY
Data sources: Datacite
ZENODO
Dataset . 2025
License: CC BY
Data sources: Datacite
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Observation of a hidden charge density wave liquid

Authors: Lee, Joshua Sung Ho;

Observation of a hidden charge density wave liquid

Abstract

Charge density waves (CDWs), electronic crystals that form within a host solid, have long been theorized to melt into a spatially textured electronic liquid. Although such liquid CDWs have not been previously observed, they may be central to the phase diagrams of correlated electron systems, including high-temperature superconductors and quantum Hall states. In 1T-TaS2, a promising material for hosting a liquid CDW, a structural phase transition hinders observation. Here, we use femtosecond light pulses to bypass this transition, revealing how topological defect dynamics govern hidden CDW correlations. Following photoexcitation, CDW diffraction peaks broaden azimuthally, indicating the emergence of a hexatic state. At elevated temperatures, photoexcitation fully destroys both translational and orientational order, leaving only a ring of diffuse scattering—a hallmark of a liquid CDW. These findings offer compelling evidence for a defect-unbinding transition into a CDW liquid. More broadly, this approach demonstrates a route to uncover electronic phases obscured by intervening transitions in thermal equilibrium.

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    popularity
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
1
Average
Average
Average