Quantum Well Interference and Exchange Coupling in Double Quantum Well Thin Films

Quantum-well-induced ferromagnetism in thin films

Quantum-well-driven magnetism in thin films.

Exchange Instabilities in Semiconductor Double Quantum Well Systems

We consider various exchange-driven electronic instabilities in semiconductor double-layer systems in the absence of any external magnetic field. We establish that there is no exchange-driven bilayer to monolayer charge transfer instability in the double-layer systems. We show that, within the unrestricted Hartree-Fock approximation, the low density stable phase (even in the absence of any inte...

Low-energy plasmons in quantum-well and surface states of metallic thin films

V. M. Silkin,1,2,3 T. Nagao,4 V. Despoja,2,5 J. P. Echeverry,2,5 S. V. Eremeev,2,6,7 E. V. Chulkov,1,2,5 and P. M. Echenique1,2,5 1Departamento de Fı́sica de Materiales, Facultad de Ciencias Quı́micas, Universidad del Paı́s Vasco, Apdo. 1072, E-20080 San Sebastián/Donostia, Spain 2Donostia International Physics Center (DIPC), P. de Manuel Lardizabal 4, E-20018 San Sebastián/Donostia, Spain 3IKERBA...

PIEZOELECTRIC QUANTIZATION IN GaInN THIN FILMS AND MULTIPLE QUANTUM WELL STRUCTURES

Details of the electronic bandstructure in pseudomorphic Ga1-xInxN/GaN single heterostructures (0 < x < 0.22) are studied. In photocarrier modulated reflectance strong modulation of the density of states (Franz-Keldysh oscillations) is found due to a piezoelectric field of about 0.6 MV/cm in the strained layer. No excitons are expected to form in the presence of this field. Studying the composi...