搜索结果: 1-13 共查到“凝聚态物理学 iron”相关记录13条 . 查询时间(0.046 秒)
Block magnetism coupled with local distortion in the iron-based spin-ladder compound BaFe2Se3
Block magnetism local distortion iron-based spin-ladder compound BaFe2Se3
2012/2/27
Magnetism in the insulating BaFe$_2$Se$_3$ was examined through susceptibility, specific heat, resistivity and neutron diffraction measurements. After formation of a short-range magnetic correlation, ...
Orbital occupation and magnetic moments of tetrahedrally coordinated iron in CaBaFe4O7
Orbital occupation magnetic moments tetrahedrally coordinated iron
2010/11/25
CaBaFe4O7 is a mixed-valent transition metal oxide having both Fe2+ and Fe3+ ions in tetrahedral coordination. Here we characterize its magnetic properties by magnetization measurements and investigat...
Theory of Valley-Density Wave and Hidden Order in Iron-Pnictides
Theory of Valley-Density Wave Iron-Pnictides
2010/11/19
In the limit of perfect nesting, the physics of iron-pnictides is governed by the density wave
formation at the zone-edge vector M. At high energies, various spin- (SDW), charge- (CDW),
orbital/pock...
Iron telluride doped lightly with selenium is known to undergo a rst order magneto-structural
transition before turning superconducting at higher doping. We study the e ects of magneto-
elastic cou...
Search for pressure induced superconductivity in CeFeAsO and CeFePO iron pnictides
pressure induced superconductivity CeFeAsO CeFePO iron pnictides
2010/11/18
The CeFeAsO and CeFePO iron pnictide compounds were studied via electrical transport measurements under high-pressure. In CeFeAsO polycrystals, the magnetic phases involving the Fe
and Ce ions coexis...
Evidence for electromagnetic granularity in polycrystalline Sm1111 iron-pnictides with enhanced phase purity
electromagnetic granularity enhanced phase purity
2010/11/19
We prepared polycrystalline SmFeAsO1-xFx (Sm1111) bulk samples by sintering and hot isostatic pressing (HIP) in order to study the effects of phase purity and relative density on the intergranular cur...
On the multi-orbital band structure and itinerant magnetism of iron-based superconductors
Fe-based superconductors Electronic Structure Tight-Binding Downfolding
2010/11/18
This paper explains the multi-orbital band structures and itinerant magnetism of the iron-pnictide and chalcogenide superconductors. We first describe the generic band structure of a single, isolated ...
Spin waves in the $(\pi,0)$ magnetically ordered iron chalcogenide Fe$_{1.05}$Te
Spin waves
2010/11/22
We use inelastic neutron scattering to show that the spin waves in the iron chalcogenide Fe1.05Te display novel dispersion clearly different from those in the related iron pnictide systems. By fitting...
Phase diagram of iron-arsenide superconductors Ca(Fe1-xCox)2As2 (0 <= x <= 0.2)
Phase diagram of iron-arsenide superconductors
2010/11/19
Platelet-like single crystals of the Ca(Fe1-xCox)2As2 series having lateral dimensions up
to 15 mm and thickness up to 0.5 mm were obtained from the high temperature solution
growth technique using ...
First-principles modeling of the interactions of iron impurities with graphene and graphite
First-principles modeling of the interactions graphene graphite
2010/11/19
Results of first principles modelling of interactions graphene and graphite with iron
impurities predict the colossal difference between these two carbon allotropes. Insertion
of the iron atoms betw...
Importance of Fermi surface topology for high temperature superconductivity in electron-doped iron arsenic superconductors
Fermi surface topology high temperature superconductivity
2010/11/18
We used angle resolved photoemission spectroscopy and thermoelectric power to study the poorly
explored, highly overdoped side of the phase diagram of Ba(Fe1xCox)2As2 high temperature su-
...
Interactions between sub-10 nm iron and cerium oxide nanoparticles and 3T3 fibroblasts : the role of the coating and aggregation state
Nanoparticle Magnetism Cell proliferation Cell viability Fibroblast Polyacrylic acid
2010/11/19
Recent nanotoxicity studies revealed that the physico-chemical characteristics of engineered nanomaterials play an important role in the interactions with living cells. Here, we report on the toxicity...
Effect of Iron Concentrations on Some Physical Properties of the System Li0.5FexGa2.5 - xO4
Ferrite jump length jump rate lattice parameter hopping conduction
2010/4/12
A series of Li0.5 Fex Ga2.5 - x O4 systems were prepared for x = 0, 0.25, 0.5, 0.75 and 1 by the general ceramic method. X-ray diffraction showed that all compositions have single phase Spinel cubic s...