Virtual half-metallicity at the CoS2/FeS2 interface induced by strain

Nazir, S.; Schwingenschlögl, Udo

doi:10.1039/c3ra22184a

Cited by 10 publications

(3 citation statements)

References 33 publications

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“… Photovoltaics: mesoporous silica (MS)@CuO@FeS 2 , P3HT:PCBM:FeS 2 , FeS 2 /graphene, FeS 2 nanotube arrays on ZnO nanotube arrays Optoelectronics : FeS 2 NCs/graphene Magnetoelectronics: CoS 2 /FeS 2 , FeS 2 /FeSe x Hydrogen production: FeS 2 /anatase TiO 2 & Hydrogen storage: MgH 2 –FeS 2 Lithium ion batteries (LIBs): FeS 2 /CNT, FeS 2 @Carbon fibre, FeS 2 /RGO, FeS 2 /N−G composite, FeS 2 /carbon shells on cobalt nanowires, pitaya‐structured FeS 2 @C Sodium ion batteries (SIBs): FeS 2 nanosheet@Fe 2 O 3, Na/FeS 2 , FeS 2 /rGO−A (reduced graphene oxide aerogel), lychee‐like FeS 2 @FeSe 2 core‐shell microspheres, FeS 2 @C yolk–shell nanoboxes, FeS 2 /CNT Supercapacitors: FeS 2 /graphene, FeS 2 /C Environmental remediation: Au@FeS 2 , FeS 2 QDs/SiO 2 ‐chitosan or polypyrrole Hydrogenation: TiO 2 /FeS 2 , FeS 2 /CNT …”

Section: Introductionmentioning

confidence: 99%

Nanocrystalline Pyrite for Photovoltaic Applications

et al. 2018

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Transition metal sulfides (TMSs) are of special interest in energy conversion and storage devices. Amongst all sulfides, fool's gold or iron pyrite (FeS 2 ) is potentially an attractive candidate for photovoltaic applications. Iron pyrite has risen to prominence due to its distinct properties and abundance in nature to meet the large scale needs. It is considered as environmentally benign solar absorber material with high absorption coefficient, α > 6 x10 5 cm À 1 for λ � 700 nm and suitable energy bandgap (E g = 0.95 eV). Numerous physical and chemical methods have been employed to deposit nanocrystalline pyrite thin films directly from source materials or indirectly by sulfuration. This review gives an overview of pyrite as a low cost photovoltaic absorber material for contemporary solar cell structures. In addition, practical approaches like the rational design of nanocomposites, band gap engineering and nanostructure synthesis of pyrite for improving its properties particularly photovoltaic properties are also deliberated. Moreover, limitations, challenges, remedies and prospects of pyrite as potential photovoltaic material are also reviewed to further advance the development of pyrite-based solar cell configurations.[a] Dr.at a low precursor concentration, pyrite nanocubes (125-250 nm in 20-180 min) were obtained due to low nuclei concentration and slow growth (diffusion limited) in quasiequilibrium. The anisotropic structures nanodendrites were 2 3 4 5 6 7 8

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Section: Introductionmentioning

confidence: 99%

Nanocrystalline Pyrite for Photovoltaic Applications

et al. 2018

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“…Oxidation of Hyd also provides electrons to the Co-ZSM-5(150%loading)/GCE surface which further increases the conductance of the working electrode. [78][79][80] Therefore, the current response intensied with the increasing potential. These supplies of electrons quickly increase the conductance of the Co-ZSM-5(150%-loading)/GCE coating.…”

Section: Study Of Cobalt-exchange Level In Zsm-5 Zeolites (Pyridine Amentioning

confidence: 99%

Ultrasensitive hydrazine sensor fabrication based on Co-doped ZSM-5 zeolites for environmental safety

2017

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“…Notably, cobalt disulfide (CoS 2 ) is of particular interest in this context due to its inherent itinerant ferromagnetism and its potential to exhibit half‐metallicity, as extensively explored in previous studies. [ 19 , 20 , 21 , 22 ] DFT analyses have demonstrated a minimal overlap between spin majority and minority bands in CoS 2 due to large exchange splitting, [ 21 ] and a slight hole doping could induce a half‐metallic state. [ 19 , 23 , 24 , 25 ] By investigating the effects of Fe doping on various magnetic and electric properties of CoS 2 , complemented by Point Contact Andreev Reflection (PCAR) analysis, they revealed that Fe doping levels above 7% induce a highly spin‐polarized state.…”

Section: Introductionmentioning

confidence: 99%

Tunable Colossal Anomalous Hall Conductivity in Half‐Metallic Material Induced by d‐Wave‐Like Spin‐Orbit Gap

Choi,

Park,

Kyung

et al. 2024

Advanced Science

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The anomalous Hall conductivity (AHC) in magnetic materials, resulting from inverted band topology, has emerged as a key adjustable function in spin‐torque devices and advanced magnetic sensors. Among systems with near‐half‐metallicity and broken time‐reversal symmetry, cobalt disulfide (CoS2) has proven to be a material capable of significantly enhancing its AHC. In this study, the AHC of CoS2 is empirically assessed by manipulating the chemical potential through Fe‐ (hole) and Ni‐ (electron) doping. The primary mechanism underlying the colossal AHC is identified through the application of density functional theory and tight‐binding analyses. The main source of this substantial AHC is traced to four spin‐polarized massive Dirac dispersions in the kz = 0 plane of the Brillouin zone, located slightly below the Fermi level. In Co0.95Fe0.05S2, the AHC, which is directly proportional to the momentum‐space integral of the Berry curvature (BC), reached a record‐breaking value of 2507 Ω−1cm−1. This is because the BCs of the four Dirac dispersions all exhibit the same sign, a consequence of the d‐wave‐like spin‐orbit coupling among spin‐polarized eg orbitals.

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Virtual half-metallicity at the CoS2/FeS2 interface induced by strain

Cited by 10 publications

References 33 publications

Nanocrystalline Pyrite for Photovoltaic Applications

Nanocrystalline Pyrite for Photovoltaic Applications

Ultrasensitive hydrazine sensor fabrication based on Co-doped ZSM-5 zeolites for environmental safety

Tunable Colossal Anomalous Hall Conductivity in Half‐Metallic Material Induced by d‐Wave‐Like Spin‐Orbit Gap

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