skip to main content

Title: Edge-states ferromagnetism of WS{sub 2} nanosheets

The multilayer WS{sub 2} nanosheets prepared from WO{sub 3} nanowires exhibit strong ferromagnetic behavior with saturation magnetization (M{sub S}) of 0.0058 emu/g and coercive field (H{sub C}) of 92 Oe at room temperature. By decreasing the temperature down to 3 K the H{sub c} is increased up to 1115 Oe, revealing the existence of long-range magnetic ordering. Density functional theory spin-polarized calculations predict that strong ferromagnetic moments in WS{sub 2} nanosheets are attributed to the zigzag edge sulphur S and tungsten W atoms. Our findings also suggest that the WS{sub 2} nanosheets with a high density of edge spins could be used to fabricate spintronics devices, which are circuits utilizing the spin of the electron to process and store information.
Authors:
; ; ; ; ;  [1]
  1. State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, P. O. Box 912, Beijing 100083 (China)
Publication Date:
OSTI Identifier:
22300218
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 20; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; COERCIVE FORCE; DENSITY FUNCTIONAL METHOD; FERROMAGNETISM; LAYERS; MAGNETIZATION; NANOSTRUCTURES; QUANTUM WIRES; SATURATION; SHEETS; SPIN; SPIN ORIENTATION; TEMPERATURE RANGE 0273-0400 K; TUNGSTEN OXIDES; TUNGSTEN SULFIDES NANOWIRES