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We study a quasi-2D classical Landau-Ginzburg-Wilson effective field theory in the presence of quenched disorder in which incommensurate charge-density wave and superconducting orders are intertwined. The disorder precludes long-range…

Superconductivity · Physics 2015-11-11 Laimei Nie , Lauren E. Hayward Sierens , Roger G. Melko , Subir Sachdev , Steven A. Kivelson

The impact of variable Ti self-doping on the 1T-TiSe2 charge density wave (CDW) is studied by scanning tunneling microscopy. Supported by density functional theory we show that agglomeration of intercalated-Ti atoms acts as preferential…

The kagome superconductor CsV$_3$Sb$_5$ hosts a variety of charge density wave (CDW) phases, which play a fundamental role in the formation of other exotic electronic instabilities. However, identifying the precise structure of these CDW…

The existence of a charge density wave (CDW) in transition metal dichalcogenide CuS$_2$ has remained undetermined since its first experimental synthesis nearly 50 years ago. Despite conflicting experimental literature regarding its low…

Mesoscale and Nanoscale Physics · Physics 2020-10-07 Yuxin Yin , Jennifer Coulter , Christopher J. Ciccarino , Prineha Narang

We report on sliding Charge Density Wave (CDW) in the quasi two-dimensional TbTe$_3$ system probed by coherent x-ray diffraction combined with {\it in-situ} transport measurements. We show that the non-Ohmic conductivity in TbTe$_3$ is made…

Strongly Correlated Electrons · Physics 2025-01-08 D. Le Bolloc'h , A. A. Sinchenko , V. L. R. Jacques , L. Ortega , J. E. Lorenzo , G. Chahine , . Lejay , P. Monceau

There is a common belief that superconductivity and charge density wave (CDW) order accommodate homogenously in real space but compete with each other for the effective density of states in momentum space in CDW superconductors. By…

Superconductivity · Physics 2024-04-18 Jinyulin Li , Qing Li , Jinjin Liu , Ying Xiang , Huan Yang , Zhiwei Wang , Yugui Yao , Hai-Hu Wen

Low-dimensional materials are susceptible to electronic instabilities such as charge density waves (CDWs), originating from a divergence in the Lindhard electron response function, combined with a finite electron-phonon coupling strength.…

Strongly Correlated Electrons · Physics 2024-09-11 Fei Guo , Michele Puppin , Lukas Hellbruck , Arnaud Magrez , Eduardo B. Guedes , Igor Sokolovic , J. Hugo Dil

In materials science, much effort has been devoted to reproduce superconductivity in chemical compositions analogous to cuprate superconductors since their discovery over thirty years ago. This approach was recently successful in realising…

In the $\textit{A}$V$_{3}$Sb$_{5}$ ($\textit{A}$ $=$ K, Rb, Cs) kagome materials, superconductivity coexists with a charge density wave (CDW), constituting a new platform to study the interplay of these two orders. Despite extensive…

Superconductivity · Physics 2025-05-14 Sofie Castro Holbæk , Mark H. Fischer

We report a comprehensive study of the uniaxial stress response of charge-density-wave (CDW) correlations in detwinned single crystals of the high temperature superconductor YBa$_2$Cu$_3$O$_{6+x}$ (YBCO$_{6+x}$) with $0.40 \leq x \leq 0.93$…

Charge density wave (CDW) implies a periodic modulation of the charge density. Typically observed in metallic systems, CDWs arise from Fermi surface instabilities, resulting in the total or partial gapping of the Fermi surface. Here, we…

We report the observation of coherent oscillations associated with charge density wave (CDW) order in the underdoped cuprate superconductor YBa2Cu3O6+x by time-resolved optical reflectivity. Oscillations with frequency 1.87 THz onset at…

Superconductivity · Physics 2015-06-15 J. P. Hinton , J. D. Koralek , Y. M. Lu , A. Vishwanath , J. Orenstein , D. A. Bonn , W. N. Hardy , Ruixing Liang

In this article, we review different studies based on advanced x-ray diffraction techniques - especially coherent x-ray diffraction - that allowed us to reveal the behaviour of such symmetry-breaking systems as Charge Density Wave (CDW) and…

Strongly Correlated Electrons · Physics 2023-07-26 David Le Bolloc'h , E. Bellec , N. Kirova , V. L. R. Jacques

Compelling evidence exists for electronic phase separation in cuprate high-$T_c$ superconductors, emerging near 1/8 hole doping. At these dopings and low temperatures, intertwined charge and spin stripes coexist with more uniformly doped…

Strongly Correlated Electrons · Physics 2025-05-14 Qiang Chen , Angela Moskal , Yiheng Wang , B. D. E. McNiven , A. A. Aczel , Wei Tian , B. D. Gaulin

Charge density waves (CDWs), electronic crystals that form within a host solid, have long been speculated to melt into a spatially textured electronic liquid. Though they have not been previously detected, liquid CDWs may nonetheless be…

Strongly Correlated Electrons · Physics 2025-05-09 Joshua S. H. Lee , Thomas M. Sutter , Goran Karapetrov , Pietro Musumeci , Anshul Kogar

Charge density waves (CDWs) with superconductivity, competing Fermi surface instabilities and collective orders, have captured much interest in two-dimensional van der Waals (vdW) materials. Understanding of CDW suppression mechanism, its…

The defining characteristic of hole-doped cuprates is $d$-wave high temperature superconductivity. However, intense theoretical interest is now focused on whether a pair density wave state (PDW) could coexist with cuprate superconductivity…

Metals interacting via short-range antiferromagnetic fluctuations are unstable to sign-changing superconductivity at low temperatures. For the cuprates, this leading instability leads to the well known $d-$wave superconducting state.…

Strongly Correlated Electrons · Physics 2014-10-27 Debanjan Chowdhury , Subir Sachdev

A softening of phonon-dispersion has been observed experimentally in under-doped cuprate superconductors at the charge-density wave (CDW) ordering wave vector. Interestingly, the softening occurs below the superconducting (SC) transition…

Superconductivity · Physics 2021-02-24 Saheli Sarkar , Maxence Grandadam , Catherine Pépin

In this study, using low-temperature scanning tunneling microscopy (STM), we focus on understanding the native defects in pristine \textit{1T}-TiSe$_2$ at the atomic scale. We probe how they perturb the charge density waves (CDWs) and lead…

Materials Science · Physics 2021-04-07 Imrankhan Mulani , Umashankar Rajput , Luminita Harnagea , Aparna Deshpande