Two dimensional (2D) metallic trihalides have drawn attention over the years due to their in-
trinsic ferromagnetism and associated large anisotropy at nanoscale. The interaction involved in
these layered structure are of van der Waals (vdW) types which are important for exfoliation to
different thin samples. This enables one to compare the journey of physical properties from bulk
structures to monolayer counterpart. In this topical review, the modulation of electronic, magnetic
and optical properties by strain engineering, alloying, doping, defect engineering etc. have been
discussed extensively. The results obtained by first principle density functional theory (DFT) cal-
culations are verified by recent experimental observations. The relevant experimental synthesis of
different morphological metallic trihalides are highlighted. The feasibility of such routes may indi-
cate other possible heterostructures. Apart from spintronics based applications, metallic trihalides
are potential candidates in sensing and data storage. Moreover, high thermoelectric figure of merit
of chromium trihalides at higher temperatures leads to the possibility of multi-purpose applications.
We hope this review will give important directions to further research in metallic trihalide systems
having tunable band gap with reduced dimensionalities.
Herein, the electronic, thermoelectric, and optical properties of semimetallic HPX6 (X = C, Si, Ge, Sn) monolayers are systematically studied under the influence of external electric field in the framework of density functional theory. A band tuning has been achieved in these structures by the application of an external electric field of appropriate strength. It is predicted that Dirac cone splitting is nearly proportional to the external electric field strength. The modulation of electric properties induced by external field can alter the position of chemical potential in the band diagram and brings significant improvement in thermoelectric responses. The application of an external electric field significantly modulates the optical properties. The electric field‐induced HPX6 system provides better thermoelectric and optical response for nanodevice applications.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.