Université de Neuchâtel

Probing nanoscale ferroelectricity by photoelectron diffraction

Despont, Laurent ; Aebi, Philippe (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2007 ; 1942.

This thesis is based on research carried out at the Institut de Physique, Université de Neuchâtel, Switzerland during the period 2003 - 2007, in collaboration with the DPMC, University of Geneva, where the samples have been grown. A ferroelectric is generally defined as a material with two or more stable states of different non-zero intrinsic lattice polarization which can be reversed through...

Université de Neuchâtel

Photoemission of switchable mirrors and quantum wells

Koitzsch, Christian ; Aebi, Philippe (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2004 ; 1826.

This thesis focuses on the electronic properties of materials, which were explored with Angle Resolved Photoemission (ARPES) and Density Functional Theory (DFT). The natural fingerprint of electronic phenomena in crystalline solids, e.g. in this thesis the hydrogen-induced metal-insulator transition and the formation of standing electron waves in quantum wells, is the k-resolved band structure or...