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New materials are currently sought for use in spintronics applications. Ferromagnetic materials with half metallic properties are valuable in this respect. Here we present the electronic structure and magnetic properties of binary compounds…

材料科学 · 物理学 2016-08-31 B. Sanyal , L. Bergqvist , O. Eriksson

The relative energetic stability of the structural phases of common antiferromagnetic transition-metal oxides (MnO, FeO, CoO, and NiO) within the semilocal and hybrid density functionals are fraught with difficulties. In particular, MnO is…

We present a spin density functional theory (DFT) study for semiconducting ScN and Mn-substituted ScN. Their structural and magnetic properties have been investigated using the all electrons augmented spherical wave method (ASW) with a…

材料科学 · 物理学 2009-09-10 Abdesalem Houari , Samir. F. Matar , Mohamed A. Belkhir

Using the hybrid exchange-correlation functional within the density-functional theory, we have systematically investigated the structural and electronic properties of MO (M = Be, Mg, Ca, Sr, Ba, Zn, Cd) in binary rocksalt (B1), zincblende…

材料科学 · 物理学 2019-03-19 Jinying Yu , Mingke Zhang , Zihan Zhang , Shangwei Wang , Yelong Wu

The lithium manganese oxide spinel Li$_x$Mn$_2$O$_4$, with $0\leq x\leq 2$, is an important example for cathode materials in lithium ion batteries. However, an accurate description of Li$_x$Mn$_2$O$_4$ by first-principles methods like…

材料科学 · 物理学 2020-05-20 Marco Eckhoff , Peter E. Blöchl , Jörg Behler

We present an analysis of the polymorphic energy ordering and properties of the rock salt and zincblende structures of manganese oxide using fixed node diffusion Monte Carlo (DMC). Manganese oxide is a correlated, antiferromagnetic material…

材料科学 · 物理学 2016-01-06 Joshua A. Schiller , Lucas K. Wagner , Elif Ertekin

We use a density-functional-theory (DFT) approach with a modified Becke-Johnson exchange plus local density approximation (LDA) correlation potential (mBJLDA) [semi-local, orbital-independent, producing accurate semiconductor gaps. see F.…

材料科学 · 物理学 2013-01-31 San-Dong Guo , Bang-Gui Liu

We report on Monte Carlo studies of the kinetic exchange model for (III,Mn)V ferromagnetic semiconductors in which S=5/2 local moments, representing Mn^{2+} ions, are exchange coupled to band electrons. We treat the Mn^{2+}$ spin…

凝聚态物理 · 物理学 2009-10-31 John Schliemann , Jürgen König , A. H. MacDonald

Based on first-principles electron structure calculations and employing the frozen-magnon approximation we study the exchange interactions in a series of transition-metal binary alloys crystallizing in the zinc-blende structure and…

材料科学 · 物理学 2009-11-11 E. Sasioglu , I. Galanakis , L. M. Sandratskii , P. Bruno

Manganese nitrides should be with amazing properties and promised application, because manganese atom is particular for its magnetism, valence states, high electron density, etc., and N atoms in compounds form different substructures. It is…

材料科学 · 物理学 2021-11-04 Li Li , Kuo Bao , Xingbin Zhao , Tian Cui

The interlayer exchange coupling mediated by the valence band electrons in $\textrm{(MnTe)}_{\textrm{m}} \textrm{(ZnTe)}_{\textrm{n}}$ superlattices has been examined theoretically. The calculations have been performed within the framework…

软凝聚态物质 · 物理学 2007-05-23 R. Wasowicz

Heterostructures of mixed-valence manganites are still under intense scrutiny, due to the occurrence of exotic quantum phenomena linked to electronic correlation and interfacial composition. For instance, if two anti-ferromagnetic…

强关联电子 · 物理学 2022-08-05 Fabrizio Cossu , Heung-Sik Kim , Biplab Sanyal , Igor Di Marco

Motivated by the ongoing interest in nitrides as materials for spintronics applications we have studied effects of doping with magnetic transition-metal elements (T=Cr,Mn,Fe,Co and Ni) on the electronic properties of semiconducting scandium…

材料科学 · 物理学 2020-09-23 Fares Benissad , Abdesalem Houari

Density functional theory simulations with conventional (PBE) and hybrid (HSE06) functionals were performed to investigate the structural and electronic properties of MXene monolayers, \ce{Ti_{n+1}C_n} and \ce{Ti_{n+1}N_n} ($n$ = 1--9) with…

材料科学 · 物理学 2013-07-04 Yu Xie , P. R. C. Kent

Manganese sulfide (MnS) is a p-type magnetic semiconductor whose physicochemical properties are sensitive to nanocrystal (NC) morphology, yet the thermodynamic driving forces governing morphology across MnS polymorphs remain poorly…

Manganese metallocenes larger than the experimentally produced sandwiched MnBz$_2$ compound are studied using several density functional theory methods. First, we show that the lowest energy structures have Mn clusters surrounded by benzene…

Half-metallicity in materials has been a subject of extensive research due to its potential for applications in spintronics. Ferromagnetic manganites have been seen as a good candidate, and aside from a small minority-spin pocket observed…

强关联电子 · 物理学 2014-12-22 M. Baublitz , C. Lane , Hsin Lin , Hasnain Hafiz , R. S. Markiewicz , B. Barbiellini , Z. Sun , D. S. Dessau , A. Bansil

A new tight-binding total energy method, which has been shown to accurately predict ground state properties of transition and noble metals, is applied to Manganese, the element with the most complex ground state structure among the $d$…

mtrl-th · 物理学 2016-09-07 Michael J. Mehl , Dimitrios A. Papaconstantopoulos

We have investigated from first-principles an electronic structure and magnetism in MnB4 compound with experimentally observed orthorhombic C12/m1 structure. It is found that Mn tetra-borides (MnB4) is found to have metallic ground state…

材料科学 · 物理学 2013-11-22 S. Khmelevskyi , J. Redinger , A. B. Shick , P. Mohn

An accurate density-functional method is used to study systematically half-metallic ferromagnetism and stability of zincblende phases of 3d-transition-metal chalcogenides. The zincblende CrTe, CrSe, and VTe phases are found to be excellent…

材料科学 · 物理学 2009-11-10 Wen-Hui Xie , Ya-Qiong Xu , Bang-Gui Liu , D G Pettifor
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