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Leriche, R. T., Palacio‐Morales, A., Campetella, M., Tresca, C., Sasaki, S., Brun, C., Debontridder, F., David, P., Arfaoui, I., Šofranko, O., Samuely, T., Kremer, G., Monney, C., Jaouen, T., Cario, L., Calandra, M. & Cren, T. (2020) Misfit Layer Compounds: A Platform for Heavily Doped 2D Transition Metal Dichalcogenides. Adv. Funct. Mater. 2007706.
Added by: Richard Baschera (2020-11-23 12:26:55) Last edited by: Richard Baschera (2020-11-23 12:32:24) |
| Type de référence: Article DOI: 10.1002/adfm.202007706 Numéro d'identification (ISBN etc.): 1616-301X, 1616-3028 Clé BibTeX: Leriche2020 Voir tous les détails bibliographiques  |
Catégories: INTERNATIONAL, PMN Créateurs: Arfaoui, Brun, Calandra, Campetella, Cario, Cren, David, Debontridder, Jaouen, Kremer, Leriche, Monney, Palacio‐Morales, Samuely, Sasaki, Šofranko, Tresca Collection: Adv. Funct. Mater. |
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| Liens URLs https://onlinelibr ... 002/adfm.202007706 |
| Résumé |
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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 approximate to 1 x 10(14) 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 approximate to 6 x 10(14) cm(-2). Due to this huge doping, the 3 x 3 charge density wave is replaced by a 2 x 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.
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