Please use this identifier to cite or link to this item:
http://dspace.iitrpr.ac.in:8080/xmlui/handle/123456789/4299
Title: | Non-trivial band topology in Bi doped Lanthanum monopnictides (LaX; X = As and Sb) |
Authors: | Wadhwa, P. Dhilip Kumar, T.J. Shukla, A. Kumar, R. |
Keywords: | First-principles calculations Density functional theory Topological materials Extremely large magnetoresistance |
Issue Date: | 10-Dec-2022 |
Abstract: | In this study, we report first-principles investigation of non-trivial topological characteristics in Bi doped Lanthanum monopnictides, particularly LaAs and LaSb. For this, we varied the concentration of Bi atoms in 1 × 1 × 2 supercell of LaAs and LaSb unit cells along [001] direction, and phonon-dispersion spectra of all these doped arrangements are observed to be dynamically stable.HSE06 band structure calculations with spin–orbit coupling reveal that the non-trivial topological characteristics starts appearing in 50% concentration of Bi atoms in the given supercells of LaAs and LaSb. The non-trivial topological characteristics in the proposed doped arrangements are verified by bulk band inversion, unit Z2 topological invariant, and a surface Dirac cone. Our findings provide promising candidates of non-trivial topological family, which may carry huge potential for extremely large magnetoresistance and spintronics applications. |
URI: | http://localhost:8080/xmlui/handle/123456789/4299 |
Appears in Collections: | Year-2022 |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Full Text.pdf | 2.08 MB | Adobe PDF | View/Open Request a copy |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.