Multiband charge density wave exposed in a transition metal dichalcogenide.
Árpád Pásztor, Alessandro Scarfato, Marcello Spera, Felix Flicker, Céline Barreteau, E. Giannini, Jasper van Wezel, Ch. Renner
Abstract
. This CDW not only involves the opening of a gap on the inner band around the K-point, but also on the outer band. This leads to spatially out-of-phase charge modulations from electrons on these two bands, which we detect through a characteristic energy dependence of the CDW contrast in STM images.
Topics & Concepts
Charge density waveScanning tunneling microscopeCondensed matter physicsBand gapQuantum tunnellingSuperconductivityCharge (physics)ElectronCharge densityPhysicsElectronic band structureMaterials scienceQuantum mechanics2D Materials and ApplicationsMolecular Junctions and NanostructuresIron-based superconductors research