Dimensionality crossover to a two-dimensional vestigial nematic state from a three-dimensional antiferromagnet in a honeycomb van der Waals magnet

Z Sun, G Ye, C Zhou, M Huang, N Huang, X Xu, Q Li… - Nature Physics, 2024 - nature.com
The effects of fluctuations and disorder, which are substantially enhanced in reduced
dimensionalities, can play a crucial role in producing non-trivial phases of matter such as …

Elastoresistivity in the incommensurate charge density wave phase of BaNi2(As1−xPx)2

M Frachet, P Wiecki, T Lacmann, SM Souliou… - npj Quantum …, 2022 - nature.com
Electronic nematicity, the breaking of the crystal lattice rotational symmetry by the electronic
fluid, is a fascinating quantum state of matter. In this work, using electronic transport under …

Soft-Phonon and Charge-Density-Wave Formation in Nematic

SM Souliou, T Lacmann, R Heid, C Meingast… - Physical Review Letters, 2022 - APS
We use diffuse and inelastic x-ray scattering to study the formation of an incommensurate
charge-density-wave (I-CDW) in BaNi 2 As 2, a candidate system for charge-driven …

Potential Lifshitz transition at optimal substitution in nematic pnictide Ba1−xSrxNi2As2

DM Narayan, P Hao, R Kurleto, BS Berggren… - Science …, 2023 - science.org
BaNi2As2 is a structural analog of the pnictide superconductor BaFe2As2, which, like the
iron-based superconductors, hosts a variety of ordered phases including charge density …

Phonon softening and slowing-down of charge density wave fluctuations in

Y Song, S Wu, X Chen, Y He, H Uchiyama, B Li, S Cao… - Physical Review B, 2023 - APS
BaNi 2 As 2 is a nonmagnetic analog of the iron pnictide superconductors, and exhibits an
incommensurate charge density wave (IC-CDW) and a sizable elastoresistance. In this …

Charge density wave transitions, soft phonon, and possible electronic nematicity in

C Meingast, A Shukla, L Wang, R Heid, F Hardy… - Physical Review B, 2022 - APS
A detailed investigation of BaNi 2 (As 1− x P x) 2 single crystals using high-resolution
thermal-expansion, heat-capacity, Young's-modulus, and resistivity measurements is …

Signatures of Hund metal and finite-frequency nesting in revealed by electronic Raman scattering

G Blesio, S Beck, O Gingras, A Georges, J Mravlje - Physical Review Research, 2024 - APS
We investigate the electronic Raman scattering of Sr 2 RuO 4 using a material-realistic
dynamical mean-field theory approach. We identify the low-energy Fermi liquid behavior …

Combined investigation of collective amplitude and phase modes in a quasi-one-dimensional charge density wave system over a wide spectral range

K Warawa, N Christophel, S Sobolev, J Demsar… - Physical Review B, 2023 - APS
We investigate experimentally both the amplitude and phase channels of the collective
modes in the quasi-1D charge-density-wave (CDW) system, K 0.3 MoO 3, by combining (i) …

Strong electron-phonon coupling in

L Song, J Si, T Fennell, U Stuhr, G Deng, J Wang, J Liu… - Physical Review B, 2024 - APS
The charge density wave (CDW) or nematicity has been found to coexist with
superconductivity in many systems. Thus, it is interesting that the superconducting transition …

Enhanced Phonon–Phonon Interactions and Weakened Electron–Phonon Coupling in Charge Density Wave Topological Semimetal EuAl4 with a Possible …

S Cao, F **, J Zhao, YZ Long, J Luo… - The Journal of …, 2025 - ACS Publications
The origin of the charge density wave (CDW) is a long-term open issue. Furthermore, the
evolution of phonon–phonon interactions (PPIs) across CDW transitions has rarely been …