6533b82efe1ef96bd1293af0

RESEARCH PRODUCT

Enhanced CDW Transitions in Nb3X4(X = S, Se, Te): Intercalation and Surface Effects

H. J. P. MiddenH. BöhmN. JugAlbert ProdanJ. C. BennettF.w. Boswell

subject

Surface (mathematics)Materials scienceCondensed matter physicsFermi levelIntercalation (chemistry)Fermi surfaceElectronic structureCondensed Matter PhysicsElectronic Optical and Magnetic Materialslaw.inventionsymbols.namesakeSmall peaklawsymbolsScanning tunneling microscopeFermi Gamma-ray Space Telescope

description

A x Nb 3 X 4 (A = In, Tl, ZnHg; X = S, Se, Te) compounds show CDW instabilities dependent on the type and concentration of intercalate. Tl or In intercalation flattens the Fermi surfaces and supports CDW formation. In the corresponding DOS spectrum the Fermi level is shifted towards coincidence with a small peak, derived mainly from the Nb dz 2 orbital. Localized modulated regions observed in STM images of Nb 3 X 4 at room temperature represent precursor effects to full CDW formation.

yearjournalcountryeditionlanguage
2004-01-01Ferroelectrics
https://doi.org/10.1080/00150190490462469