• Corpus ID: 119191379

Three-Dimensional Fermiology by Soft-X-Ray ARPES: Origin of Charge Density Waves in VSe2

  title={Three-Dimensional Fermiology by Soft-X-Ray ARPES: Origin of Charge Density Waves in VSe2},
  author={Vladimir N. Strocov and Ming Shi and Masaki Kobayashi and Claude Monney and Xiaoqiang Wang and Juraj Krempask{\'y} and Thorsten Schmitt and Luc Patthey and Helmuth Berger and Peter Blaha},
  journal={arXiv: Strongly Correlated Electrons},
Electronic structure of crystalline materials is their fundamental characteristic which is the basis of almost all their physical and chemical properties. Angle-resolved photoemission spectroscopy (ARPES) is the main experimental tool to study all electronic structure aspects with resolution in k-space. However, its application to three-dimensional (3D) materials suffers from a fundamental problem of ill-defined surface-perpendicular wavevector kz. Here, we achieve sharp definition of kz to… 


Probing bulk electronic structure with hard X-ray angle-resolved photoemission.
The effects of photon wave vector on wave vector conservation, and methods for the removal of phonon-associated smearing of features and photoelectron diffraction effects are assessed.
Soft x-ray angle-resolved photoemission spectroscopy on Ag(001): Band mapping, photon momentum effects, and circular dichroism
The (001) surface of silver (Ag) has been chosen as a simple and well known system for investigating the band mapping potential of angle-resolved photoemission spectroscopy in the soft x-ray energy
Three-dimensional band structure of layered TiTe{sub 2}: Photoemission final-state effects
Three-dimensional band structure of unoccupied and occupied states of the prototype layered material TiTe2 is determined focusing on the ! A line of the Brillouin zone. Dispersions and lifetimes of
Fermi surface nesting in several transition metal dichalcogenides
By means of high-resolution angle-resolved photoelectron spectroscopy (ARPES), we have studied the fermiology of 2H transition metal dichalcogenide polytypes TaSe2, NbSe2 and Cu0.2NbS2. The
Fermi surface nesting and the origin of charge density waves in metals
The concept of a charge density wave (CDW), which is induced by Fermi-surface nesting, originated from the Peierls idea of electronic instabilities in purely one-dimensional metals and is now often
Intrinsic accuracy in 3-dimensional photoemission band mapping
Abstract Fundamental principles of mapping 3-dimensional quasiparticle dispersions in the valence band using angle-resolved photoemission spectroscopy are discussed. Such mapping is intrinsically
Extended phonon collapse and the origin of the charge-density wave in 2H-NbSe2.
Inelastic x-ray scattering measurements of the temperature dependence of phonon dispersion in the prototypical charge-density-wave (CDW) compound 2H-NbSe2 and ab initio calculations show that it is the wave vector dependence of the electron-phonon coupling that drives the CDW formation in 2H, and determines its periodicity.
New Method for Absolute Band Structure Determination by Combining Photoemission with Very-Low-Energy Electron Diffraction: Application to Layered VSe 2
We have combined photoelectron spectroscopy (PES) and very-low-energy electron diffraction (VLEED) to study the electronic band structure $E(\mathbf{k})$ of a material with complicated unoccupied
Band structures and Fermi surfaces for 1T-TaS2, 1T-TaSe2 and 1T-VSe2
Band structures and Fermi surfaces are presented for three quasi-octahedral layer compounds. The dependence of both properties on the component kz of the wavevector normal to the layers is shown to
Charge-density-wave transitions in 1T-VSe2
An electron diffraction and imaging study of charge-density-wave phases in 1T-VSe2 is presented. Two phase transitions are found. At 110K a 3q-state is formed which at 80K transforms into an