Search for dissertations about: "charge solitons"

Found 4 swedish dissertations containing the words charge solitons.

  1. 1. Time-resolved detection of temporally correlated, single-charge tunnelling

    Author : Jonas Bylander; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Josephson junctions; time-correlated tunnelling; radio-frequency single-electron transistor; current standard; charge solitons; SET oscillations; Coulomb blockade; metrology; SET; tunnel junction array;

    Abstract : We report real-time detection of the single charges that constitute a small electrical current, as they flow through a nano-electronic device. This represents a direct demonstration of charge discreteness in an electrical current. READ MORE

  2. 2. Current measurement by real-time counting of single charges

    Author : Jonas Bylander; [2005]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; array of tunnel junctions; Coulomb blockade; radio frequency single electron transistor; SET oscillations; time correlated tunnelling; metrology; current standard; SET; charge solitons;

    Abstract : The first real-time observation of time correlated single-electron tunnelling is reported in this thesis. This is a direct detection of charge discreteness in an electrical current.When a current, I, flows through a chain of metallic islands, connected by small tunnel junctions, a lattice of charges is formed due to the Coulomb repulsion. READ MORE

  3. 3. Nanomechanical Phenomena in Low-Dimensional Structures

    University dissertation from Gothenburg : Chalmers tekniska högskola

    Author : Anton Vikström; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; superconductivity; acoustic sensors; heat flow; NEMS; surface acoustic waves; solitons; viscoelasticity; electronic edge states;

    Abstract : This is a compilation thesis which investigates various mechanical phenomena in different low-dimensional nanoscale systems. In the first part, we consider a purely mechanical phenomenon: the sensitivity of the dispersion of a Love-type surface acoustic wave (SAW) to geometry and material parameters. READ MORE

  4. 4. Stability and Mobility of Localized and Extended Excitations in Nonlinear Schrödinger Models

    University dissertation from Institutionen för fysik, kemi och biologi

    Author : Michael Öster; Magnus Johansson; Sergej Flach; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURAL SCIENCES Physics Other physics Non-linear dynamics; chaos; NATURVETENSKAP Fysik Övrig fysik Icke-linjär dynamik; kaos;

    Abstract : This thesis is mainly concerned with the properties of some discrete nonlinear Schrödinger equations. These naturally arise in many different physical contexts as the limiting form of general dynamical lattice equations that incorporate nonlinearity and coupling. READ MORE