VALLEY SPLITTING AND MAGNON-EXCITON COUPLING IN TRANSITION METAL DICHALCOGENIDES USING SEMICONDUCTING ANTIFERROMAGNETS
| Author(s) | Whalen, Matthew | |
| Date Accessioned | 2024-06-25T17:13:57Z | |
| Date Available | 2024-06-25T17:13:57Z | |
| Publication Date | 2023-05 | |
| Abstract | Valleytronics presents an innovative approach to the storage and manipulation of binary and quantum information. The availability of 2D materials has opened up exciting possibilities for exploring Valleytronics in transition metal dichalcogenides (TMDCs), owing to their valley-contrasting orbital magnetic moments and optical selection rules. While the selective control of K and K' valleys in TMDCs can be achieved by lifting the valley degeneracy using an external magnetic field, this approach has proven impractical due to the weak Zeeman splitting. Fortunately, the magnetic proximity effect obtained by interfacing a TMDC with a ferromagnet offers a solution that lifts the valley degeneracy even further. However, the realization of valley splitting via the magnetic proximity effect induced by a semiconducting antiferromagnet (AFM) has remained elusive. In addition, simultaneously establishing magnon-exciton coupling in a heterostructure of an AFM and TMDC while breaking the valley degeneracy in the TMDC would represent significant progress in the field of Valleytronics. This thesis sets forth a path forward toward achieving this goal using the semiconducting AFM CrPS4 and the TMDC WSe2, including the necessary fabrication procedure. | |
| Advisor | enter | |
| Program | enter | |
| URL | https://udspace.udel.edu/handle/19716/34532 | |
| Language | en_US | |
| Publisher | University of Delaware | |
| Title | VALLEY SPLITTING AND MAGNON-EXCITON COUPLING IN TRANSITION METAL DICHALCOGENIDES USING SEMICONDUCTING ANTIFERROMAGNETS | |
| Type | Thesis |