Anharmonicity Reveals the Tunability of the Charge Density Wave Orders in Monolayer VSe2

AO Fumega, J Diego, V Pardo, S Blanco-Canosa… - Nano Letters, 2023 - ACS Publications
VSe2 is a layered compound that has attracted great attention due to its proximity to a
ferromagnetic state that is quenched by its charge density wave (CDW) phase. In the …

Electronic structure and lattice dynamics of : Origin of the three-dimensional charge density wave

J Diego, D Subires, AH Said, DA Chaney, A Korshunov… - Physical Review B, 2024 - APS
To characterize in detail the charge density wave (CDW) transition of 1 T-VSe 2, its
electronic structure and lattice dynamics are comprehensively studied by means of x-ray …

Decisive role of electron-phonon coupling for phonon and electron instabilities in transition metal dichalcogenides

Z Wang, C Chen, J Mo, J Zhou, KP Loh, YP Feng - Physical Review Research, 2023 - APS
The origin of the charge density wave (CDW) in transition metal dichalcogenides has been
hotly debated, and no conclusive agreement has been reached. Here, we propose an ab …

Coexisting Charge-Ordered States with Distinct Driving Mechanisms in Monolayer VSe2

R Chua, J Henke, S Saha, Y Huang, J Gou, X He… - ACS …, 2021 - ACS Publications
Thinning crystalline materials to two dimensions (2D) creates a rich playground for
electronic phases, including charge, spin, superconducting, and topological order. Bulk …

Spectral signatures of a unique charge density wave in Ta2NiSe7

MD Watson, A Louat, C Cacho, S Choi, YH Lee… - Nature …, 2023 - nature.com
Abstract Charge Density Waves (CDW) are commonly associated with the presence of near-
Fermi level states which are separated from others, or “nested", by a wavector of q. Here we …

Switching of the electron-phonon interaction in assisted by hot carriers

P Majchrzak, S Pakdel, D Biswas, AJH Jones… - Physical Review B, 2021 - APS
We apply an intense infrared laser pulse in order to perturb the electronic and vibrational
states in the three-dimensional charge density wave material 1 T-VSe 2. Ultrafast snapshots …

Two-Dimensional Discommensurations: An Extension to McMillan's Ginzburg–Landau Theory

L Mertens, J van den Brink, J Wezel - Condensed Matter, 2023 - mdpi.com
Charge density waves (CDWs) profoundly affect the electronic properties of materials and
have an intricate interplay with other collective states, like superconductivity and magnetism …

Coupling to zone-center optical phonons in enhanced by charge density waves

Y Falke, N Ehlen, G Marini, AV Fedorov, VY Voroshnin… - Physical Review B, 2021 - APS
We investigate electron-phonon coupling (EPC) in the charge density wave (CDW) phase of
V Se 2 by Raman spectroscopy, angle-resolved photoemission spectroscopy (ARPES), and …

Momentum-dependent electron-phonon coupling in charge density wave systems

JP Pouget, E Canadell, B Guster - Physical Review B, 2021 - APS
Many charge density wave (CDW) systems exhibit q (T) electron-hole modulations
continuously varying with T and saturating upon cooling at an incommensurate value even if …

Anomalous Amplitude Mode Dynamics Below the Expected Charge‐Density‐Wave Transition in 1T‐VSe2

CJ Sayers, G Marini, M Calandra… - Advanced Physics …, 2024 - Wiley Online Library
A charge‐density‐wave (CDW) is characterized by a dynamical order parameter consisting
of a time‐dependent amplitude and phase, which manifest as optically‐active collective …