Misfit Layer Compounds: A Platform for Heavily Doped 2D Transition Metal Dichalcogenides - Faculté des Sciences de Sorbonne Université Accéder directement au contenu
Article Dans Une Revue Advanced Functional Materials Année : 2021

Misfit Layer Compounds: A Platform for Heavily Doped 2D Transition Metal Dichalcogenides

Shunsuke Sasaki
  • Fonction : Auteur
  • PersonId : 1307138
  • IdHAL : sasaki-imn
Laurent Cario

Résumé

Transition metal dichalcogenides (TMDs) display a rich variety of instabilities such as spin and charge orders, Ising superconductivity, and topological properties. Their physical properties can be controlled by doping in electric double‐layer field‐effect transistors (FET). However, for the case of single layer NbSe2, FET doping is limited to ≈1 × 1014 cm−2, while a somewhat larger charge injection can be obtained via deposition of K atoms. Here, by performing angle‐resolved photoemission spectroscopy, scanning tunneling microscopy, quasiparticle interference measurements, and first‐principles calculations it is shown that a misfit compound formed by sandwiching NbSe2 and LaSe layers behaves as a NbSe2 single layer with a rigid doping of 0.55–0.6 electrons per Nb atom or ≈6 × 1014 cm−2. Due to this huge doping, the 3 × 3 charge density wave is replaced by a 2 × 2 order with very short coherence length. As a tremendous number of different misfit compounds can be obtained by sandwiching TMDs layers with rock salt or other layers, this work paves the way to the exploration of heavily doped 2D TMDs over an unprecedented wide range of doping.
Fichier principal
Vignette du fichier
Leriche et al - 2020 - Misfit Layer Compounds.pdf (15.53 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-02993227 , version 1 (19-01-2021)

Licence

Paternité

Identifiants

Citer

Raphaël T. Leriche, Alexandra Palacio‐morales, Marco Campetella, Cesare Tresca, Shunsuke Sasaki, et al.. Misfit Layer Compounds: A Platform for Heavily Doped 2D Transition Metal Dichalcogenides. Advanced Functional Materials, 2021, 31 (6), pp.2007706. ⟨10.1002/adfm.202007706⟩. ⟨hal-02993227⟩
289 Consultations
138 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More