Clean 2D superconductivity in a bulk van der Waals superlattice
Abstract
Single layers of transition metal dichalcogenides exhibit exotic properties, including superconductivity. The usual route to obtaining such samples is to exfoliate a three-dimensional (3D) crystal. Devarakonda et al. instead grew a superlattice comprising alternating layers of the transition metal dichalcogenide hexagonal NbS 2 and the material Ba 3 NbS 5 (see the Perspective by Schoop). The inert Ba 3 NbS 5 layers serve to dissociate the superconducting NbS 2 layers from one another, resulting in 2D superconductivity with high carrier mobility. The combination of high mobility and reduced dimensionality may give rise to exotic quantum phases.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Oct 09, 2020
- Source ID
- 10.1126/science.aaz6643
Entities
People
- A Devarakonda
- C. Ozsoy-keskinbora
- D C Bell
- Efthimios Kaxiras
- H. Inoue
- Joseph G Checkelsky
- Liang Fu
- Markus Kriener
- Shiang Fang
- Takehito Suzuki
Organizations
- Gordon and Betty Moore Foundation
- Harvard University
- Massachusetts Institute of Technology
- National Science Foundation
- Office of Naval Research
- RIKEN Center for Emergent Matter Science
- United States Department of Energy