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Interplay between interference and Coulomb interaction in the ferromagnetic Anderson model with applied magnetic field

We study the competition between interference due to multiple single-particle paths and Coulomb interaction in a simple model of an Anderson-type impurity with local-magnetic-field-induced level splitting coupled to ferromagnetic leads. The model along with its potential experimental relevance in the field of spintronics serves as a nontrivial benchmark system where various quantum-transport appro

I mångfaldens spår. Om mångfaldsidéns spridning och genomslag i Amerika och Malmö

Under det senaste decenniet har mångfaldsbegreppet gjort sitt inträde i den svenska samhällsdebatten. Begreppet kan definieras på en rad olika sätt: i denna avhandling står den etniska aspekten i fokus. Mångfaldsidén är nära förknippad med en rad olika samhällstrender av betydelse såsom demografisk förändring, ekonomisk strukturomvandling, organisationsförändring och debatten om diskriminering och

Harmonic Rejection Mixer at ADC Input for Complex IF Dual Carrier Receiver Architecture

This paper presents a receiver architecture for intraband dual-carrier reception as specified for the upcoming releases of 3GPP WCDMA and LTE standards. It is based on a time-discrete harmonic rejection complex-IF mixer to limit the bandwidth requirements on the ADCs to that of a single carrier. The mixer has been designed and fabricated together with a 3rd order continuous-time (CT) delta-sigma A

Mixed mode fracture in concrete

The type of mixed mode fracture, which is of a main interest for concrete, is a type of fracture, where shear as well as tensile stresses act in a damage zone, which has been created due to pure tensile stresses, and which is perpendicular to the direction of these stresses. While this damage zone still transfers tensile stresses, a shear deformation takes place, which also causes shear stresses.