Charge density waves in low-dimensional material

Abstract

Charge density wave (CDW) have triggered extensive research in low dimensional systems. The discoveries of CDW provide crucial new clues for understanding intrinsic mechanisms of low dimensional electron-phonon coupling and electron correlation. In addition, the physical properties of low dimensional materials such as magnetism and superconductivity can be fine-tuned with accurately and effectively controlled CDW phase. At the beginning, the briefly introduction of the basic properties of CDW in one-dimensional and quasi one-dimensional materials reveals the physical proprieties of the CDW, for instance, the excite state and the manipulation technologies. Then, focusing on the CDW in two-dimensional system, we mainly introduce the recent research progress and the generation mechanism of CDW in two-dimensional materials. The interaction between CDW and Mott insulators, superconductivity and other orders such as spin density wave and pair density wave provides a new perspective to research the multi-electron collective excitation and electron interaction. The manipulation of multi-electron collective excitation and electron-phonon interaction in CDW though doping, high pressure and laser pulse is also introduced and share a basic similarity to the one-dimensional system. Finally, this article proposed the potential research application of two dimensional CDW.