Тип публикации: статья из журнала
Год издания: 2018
Идентификатор DOI: 10.1021/acs.jpclett.7b03276
Аннотация: Two-dimensional (2D) ferromagnets with high spin-polarization ratio and high Curie temperature are crucial for developing next-generation spintronic nanodevices. Using first-principles calculations, we predict two polymorphic modifications (t-VN and h-VN) of 2D VN lattices that have robust intrinsic ferromagnetic properties and higПоказать полностьюh Curie temperatures. Whereas t-VN has 99.9% of spin polarization at the Fermi level, h-VN possesses a half-metallic type of conductivity and keeps it after contact with semiconducting MoS2, which can be used as the substrate for h-VN synthesis and valley polarized contacts. Magnetocrystalline anisotropy energy of 2D VN polymorphs is found to be at least an order larger than those of Fe and Ni bulks. The phonon spectra and ab initio molecular dynamic simulation prove that 2D VN lattices have a high thermodynamic stability. These advantages demonstrate that the VN monolayers should be promising candidates for low-dimensional spintronic devices. © 2018 American Chemical Society.
Журнал: Journal of Physical Chemistry Letters
Выпуск журнала: Vol. 9, Is. 6
Номера страниц: 1422-1428
ISSN журнала: 19487185
Издатель: American Chemical Society