Electronic and magnetic properties of

Abstract

The electronic properties of monoclinic in its paramagnetic, ferromagnetic and antiferromagnetic states have been studied by means of the linear muffin-tin orbital method of band-structure calculation. On the basis of the corresponding results, the magnetic properties of are discussed in comparison with experimental data stemming from neutron scattering and nuclear magnetic resonance.

Thickness-Dependent and Magnetic-Field-Driven Suppression of Antiferromagnetic Order in Thin V5S8 Single Crystals

“…Thick, shiny, yellow crystals with hexagonal or half hexagonal shapes, expected for the C2/m symmetry of V 5 S 8 , 21 are the most common CVD synthesis products ( Fig. 1c shows an optical micrograph of a representative sample).…”

“…Figure S7 shows the magnetic structure of the bulk material and the spin-flopped configuration. Band structure calculations 21 We report magnetotransport measurements on thin single crystals revealing MR hysteresis beginning near zero H just below T N , with the hysteresis field scale growing dramatically with decreasing T. We surmise that this MR hysteresis is a first-order field-driven transition to a paramagnetic (PM) state. Decreasing thickness down to ~ 10 nm depresses T N and suppresses the MR hysteresis, while preserving the spin-flop transition.…”

“…Figure S7 shows the magnetic structure of the bulk material and the spin-flopped configuration. Band structure calculations 21 and neutron diffraction 17 estimate a moment ~ 1.4 µ B /V I . Pulsed high-field magnetization measurements 22 found two anomalies in M(H), the spin-flop at ~ 4.5 T and an unknown "distinct hysteresis" at 16.2 -18.4 T.…”

Metal-Insulator Transition in AxVS2 Compounds

“…There is however no proper understanding of magnetic behaviour of these clustered compounds. For example, in antiferromagnetic V 5 S 8 magnetic susceptibility, NMR, neutron scattering and band structure calculations associate differing moments to non-equivalent V-atoms [6]. In V 4 cluster compounds GaV 4 S 8 , the electrons are Mott-Anderson localized and the combination of localized spin fluctuations on vanadium clusters and low energy excitations near the Fermi energy give mixed contributions in the magnetic susceptibility [7].…”

Consequence of the Metal-Atom Clustering on the Magnetic Properties in Vanadium Sulfide V5S8

“…The crystal structure (1}5), physical properties (6}15) and electronic structure (16) of vanadium sul"de V S have been studied for over three decades. V S consists of VS layers that are made up of edge-sharing VS octahedra.…”