Search for dissertations about: "conductance quantization"

Showing result 1 - 5 of 7 swedish dissertations containing the words conductance quantization.

  2. 1. Mechanical and Electrical Properties of Mesoscopic Wires

    Author : Sara Blom; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Rabi oscillations; conductance quantization; free electron model; mesoscopic; microwave; channel; force fluctuations; adiabatic; nanowire;

    Abstract : The mechanical and electrical properties of mesoscopic wires have been studied theoretically using a free electron model. When a mesoscopic wire is elongated the conductance decreases in steps. Each step is accompanied by an abrupt change in the force. READ MORE

  4. 2. Electron Transport in Mesoscopic Semiconductor Nanostructures

    Author : Magnus Persson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : This thesis presents results from experimental studies, mostly at very low temperatures, and fabrication of very small electronic components made with GaAs/GaAlAs heterostructures. The components are so small that individual electrons are important to their characteristics. READ MORE

  5. 3. Electron transport, interaction and spin in graphene and graphene nanoribbons

    Author : Artsem Shylau; Igor Zozoulenko; Stephan Roche; Linköpings universitet; []
    Keywords : ;

    Abstract : Since the isolation of graphene in 2004, this novel material has become the major object of modern condensed matter physics. Despite of enormous research activity in this field, there are still a number of fundamental phenomena that remain unexplained and challenge researchers for further investigations. READ MORE

  6. 4. Coherent Far-Infrared Mode Pumping in Ballistic Electron Channels

    Author : Ola Tageman; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : The influence of a high frequency electromagnetic field on transport properties of ballistic electron channels is investigated theoretically. We are primarily concerned with submicron-width channels formed by split-gate depletion of a two-dimensional electron gas at a GaAs/AlGaAs heterostructure interface. READ MORE

  7. 5. Quasielectrons in Abelian and non-Abelian Quantum Hall States

    Author : Maria Hermanns; Thors Hans Hansson; Steven Simon; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; quantum Hall effect; Condensed matter physics; Kondenserade materiens fysik; teoretisk fysik; Theoretical Physics;

    Abstract : Strongly correlated electron systems continue to  attract a lot of interest. Especially two-dimensional electron systems have shown many surprising behaviours. A fascinating example is the quantum Hall effect, which arises when electrons are confined to two dimensions, subjected to a very large magnetic field, and cooled to very low temperatures. READ MORE