Pyrite with lower cubic symmetry from Lavrion, Greece

Scissors modes in crystals with cubic symmetry

We recently suggested that the Scissors Mode (a collective excitation in which one system rotates with respect another one conserving its shape) can occur in crystals with axially symmetric atoms as a precession of these atoms around the anisotropy axis of their cells, giving rise to a form of dichroism. In the present paper we investigate how the Scissors Mode can be realized in crystals with ...

Spatially resolved hazard and exposure assessments: an example of lead in soil at Lavrion, Greece.

Spatially resolved hazard assessment (SRHA) and spatially resolved exposure assessment (SREA) are methodologies that have been devised for assessing child exposure to soil containing environmental pollutants. These are based on either a quantitative or a semiquantitative approach. The feasibility of the methodologies has been demonstrated in a study assessing child exposure to Pb accessible in ...

Dual multiwavelet frames with symmetry from two-direction renable functions

Symmetry-Defying Iron Pyrite (FeS2) Nanocrystals through Oriented Attachment

Iron pyrite (fool's gold, FeS₂) is a promising earth abundant and environmentally benign semiconductor material that shows promise as a strong and broad absorber for photovoltaics and high energy density cathode material for batteries. However, controlling FeS₂ nanocrystal formation (composition, size, shape, stoichiometry, etc.) and defect mitigation still remains a challenge. These problems r...

Critical Behavior of Vector Models with Cubic Symmetry

We report on some results concerning the effects of cubic anisotropy and quenched un-correlated impurities on multicomponent spin models. The analysis of the six-loop three-dimensional series provides an accurate description of the renormalization-group flow. 1 Cubic-symmetric models The magnetic interactions in crystalline solids with cubic symmetry like iron or nickel are usually modeled usin...