Investigating ferromagnetic response in monolayer CVD grown MoS2 flakes using quantum weak measurement
Abstract
We synthesize MoS2 atomic layer flakes at different growth conditions to tailor S-terminated and Mo-terminated edge defect states that are investigated for their ferromagnetic response. We leverage quantum weak measurement principles to construct a spin Hall effect of light-based magneto-optic Kerr effect (SHEL-MOKE) setup to sense the ultra-small magnetic response from the synthesized atomic layers. We establish that Mo-terminated edge states are the primary source of ferromagnetic response from MoS2 flakes, which is consistent with x-ray photoelectron, Raman, and photoluminescence spectroscopic results. In the process, we demonstrate SHEL-MOKE to be a robust technique to investigate ultra-weak magnetic properties in novel atomic-scale materials. Our findings highlight the importance of controlling edge terminations in engineering magnetism at the nanoscale and underscore the potential of weak value amplification based optical measurements.
Article Details
Journal Info
The Journal of Chemical Physics
American Institute of Physics
Authors (7)
Wardah Mahmood
Department of Physics, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences (LUMS), Opposite Sector U, D.H.A. 1 , Lahore 54792,
Muhammad Hammad Raza Gardezi
Department of Physics, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences (LUMS), Opposite Sector U, D.H.A. 1 , Lahore 54792,
Muhammad Arshad
Muddasir Naeem
Department of Physics, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences (LUMS), Opposite Sector U, D.H.A. 1 , Lahore 54792,
Ammar Ahmed Khan
Department of Physics, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences (LUMS), Opposite Sector U, D.H.A. 1 , Lahore 54792,
Syed Adnan Raza
Department of Physics, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences (LUMS), Opposite Sector U, D.H.A. 1 , Lahore 54792,
Muhammad Sabieh Anwar
Department of Physics, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences (LUMS), Opposite Sector U, D.H.A. 1 , Lahore 54792,