41 research outputs found
Nonstable K-Theory for graph algebras
We compute the monoid V (LK(E)) of isomorphism classes of finitely generated
projective modules over certain graph algebras LK(E), and we show that this monoid satisfies
the refinement property and separative cancellation. We also show that there is a natural
isomorphism between the lattice of graded ideals of LK(E) and the lattice of order-ideals
of V (LK(E)). When K is the field C of complex numbers, the algebra LC(E) is a dense
subalgebra of the graph C -algebra C (E), and we show that the inclusion map induces an
isomorphism between the corresponding monoids. As a consequence, the graph C*-algebra
of any row-finite graph turns out to satisfy the stable weak cancellation propert
Optical wireless data transmission with a sensor network integrated in a textile-reinforced composite
Inherent glucocorticoid response potential of isolated hypothalamic neuroendocrine neurons.
Quantum-well induced giant spin-orbit splitting
We report on the observation of a giant spin-orbit splitting of quantum-well states in the unoccupied electronic structure of a Bi monolayer on Cu(111). Up to now, Rashba-type splittings of this size have been reported exclusively for surface states in a partial band gap. With these quantum-well states we have experimentally identified a second class of states that show a huge spin-orbit splitting. First-principles electronic structure calculations show that the origin of the spin-orbit splitting is due to the perpendicular potential at the surface and interface of the ultrathin Bi film. This finding allows for the direct possibility to tailor spin-orbit splitting by means of thin-film nanofabrication
Biosensor system with polymer microring resonators manufactured by multilevel-nanoimprint
Über das Verhältnis der Vektorübertragung zu den Variationsproblemen in Cartanschen Räumen
Ultrafast quasiparticle dynamics in metallic quantum-wells
Resumen del trabajo presentado al 7th Symposium on Ultrafast Surface Dynamics (USD), celebrado en Brijuni Islands (Croatia) del 22 al 26 de agosto de 2010.Peer reviewe