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Effective Doping of Monolayer Phosphorene by Surface Adsorption of Atoms for Electronic and Spintronic Applications.

Authors :
Rastogi, Priyank
Kumar, Sanjay
Bhowmick, Somnath
Agarwal, Amit
Chauhan, Yogesh Singh
Source :
IETE Journal of Research. Mar2017, Vol. 63 Issue 2, p205-215. 11p.
Publication Year :
2017

Abstract

We study the effect of surface adsorption of 27 different adatoms on the electronic and magnetic properties of monolayer black phosphorus using density functional theory. Choosing a few representative elements from each group, ranging from alkali metals (group I) to halogens (group VII), we calculate the band structure, density of states, magnetic moment and effective mass for the energetically most stable location of the adatom on monolayer phosphorene. We predict that group I metals (Li, Na, K), and group III adatoms (Al, Ga, In) are effective in enhancing the n-type mobile carrier density, with group III adatoms resulting in lower effective mass of the electrons, and thus higher mobilities. Furthermore, we find that the adatoms of transition metals Ti and Fe produce a finite magnetic moment (1.87 and 2.31 μB) in monolayer phosphorene, with different band gap and electronic effective masses (and thus mobilities), which approximately differ by a factor of 10 for spin-up and spin-down electrons, opening up the possibility for exploring spintronic applications. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
03772063
Volume :
63
Issue :
2
Database :
Academic Search Index
Journal :
IETE Journal of Research
Publication Type :
Academic Journal
Accession number :
122428392
Full Text :
https://doi.org/10.1080/03772063.2016.1243020