Accession Number:

AD1009708

Title:

Versatile Electronic Properties of VSe2 Bulk, Few-Layers, Monolayer, Nanoribbons, and Nanotubes: A Computational Exploration

Descriptive Note:

Journal Article - Open Access

Corporate Author:

University of Puerto Rico at Rio Piedras San Juan Puerto Rico

Personal Author(s):

Report Date:

2014-08-13

Pagination or Media Count:

14.0

Abstract:

Density functional theory computations were performed to investigate the stabilities and magnetic and electronic properties of VSe2 bulk, few-layers, monolayer, and its derived nanoribbons NRs and nanotubes in both T and H phases. All these materials are ferromagnetic, but exhibit versatile electronic properties. The VSe2 bulk and few layers in either T or H phase, and T monolayer are metallic, while the H monolayer is a semiconductor. For nanoribbons, the zigzag NRs in both T and H phases and the armchair NRs in T phase are metallic, while the armchair NRs in H phase are half-metallic. The edge hydrogenation can retain or amend the electronic property of the pristine NRs depending on the chirality and phases. Regardless of the chirality, nanotubes in T phase are half metallic, while those in H phase are metals. These findings provide a simple and effective route to tune the electronic properties of VSe2 nanostructures in a wide range and also facilitate the design of VSe2-based nanodevices.

Subject Categories:

  • Miscellaneous Materials

Distribution Statement:

APPROVED FOR PUBLIC RELEASE