Tuning topological superconductivity in 2M-WS2 via non-destructive methods- A first-principles approach
Abstract
The objective of the proposed research is to understand and tune the electronic structure properties of a recently-discovered, intrinsic topological superconductor (TSC) - two-dimensional (2D) layered tungsten disul�de in the 2M-phase (2M-WS2). The synthesis of this novel phase of the layered transition metal dichalcogenide (TMD) is an important recent development in the search for intrinsic TSCs that combine two properties - superconductivity and non-trivial topology - in a single material. Intrinsic TSCs are highly sought after as hosts to Majorana particles, which are important for realizing fault-tolerant, topological quantum computation. Different properties of 2M-WS2 are only beginning to be understood and there is a need for de-tailed atomistic studies exploring its properties and their modi�cations by different stimuli, such as strain application and chemical changes. In particular, this theoretical work will harness the power of non-destructive chemical doping via intercalation in isolation or in combination with external strain for improved superconducting properties in 2M-WS2. Intercalated 2D-layered materials dis-play unique electronic structure properties, which might differ drastically from those of the parent compound. Hence, intercalation is a powerful materials design tool. The insertion of foreign chemical species between the 2D layers of 2M-WS2 will result in charge doping as well as straining of the layers due to the increased interlayer spacing. These effects are expected to modulate inter- and intra-layer interactions, changing the properties of the crystal.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 14, 2024
- Source ID
- FA95502310679
Entities
People
- Pratibha Dev
Organizations
- Air Force Office of Scientific Research
- Howard University
- United States Air Force