The 4Hb-TaSe 2 commensurate state has been studied at room temperature by X-ray single crystal diffraction methods. The in-plane Ta atom displacements have been determined. Distortion amplitudes are about 0.20 . Contracted 13 Ta atom clusters can be isolated, correspondingly the Ta-Ta interatomic...
We report on ultrafast photoindued charge density wave (CDW) dynamics in the transition-metal dichalcogenide 4Hb-TaSe2, studied with ultrafast electron diffraction. Fluence dependence of the lattice superstructure suppression show a phase transition from the commensurate to the incommensurate phase of 4...
Journal of Physics B Atomic Molecular & Optical PhysicsOlaoye O, Erasmus N, Haupt K and Schwoerer H 2016 Femstosecond dynamics of decoupled superlattice domains in 4HB-TaSe2 single crystals J. Phys. B: At. Mol. Opt. Phys. 49 064011...
Here, we report on the Fermi surface of 4Hb-TaSe2, a polytype which consists of alternately stacked layers with octahedral (T) and trigonal prismatic (H) coordination of tantalum in the Se-Ta-Se layers. The material is known to host a charge density wave (CDW) phase with star clusters...