Sökning: "quantum Hall effect"

Visar resultat 1 - 5 av 29 avhandlingar innehållade orden quantum Hall effect.

  1. 1. Quasiparticles in the Quantum Hall Effect

    Detta är en avhandling från Stockholm : Fysikum

    Författare :Janik Kailasvuori; Stockholms universitet.; [2006]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; quantum Hall effect; quasiparticles; noncommutative Chern-Simons theory; nonabelian statistics; thin torus; p-wave superconductivity; topology; index theory; effective gauge fields; NATURAL SCIENCES Physics Condensed matter physics; NATURVETENSKAP Fysik Kondenserade materiens fysik;

    Sammanfattning : The fractional quantum Hall effect (FQHE), discovered in 1982 in a two-dimensional electron system, has generated a wealth of successful theory and new concepts in condensed matter physics, but is still not fully understood. The possibility of having nonabelian quasiparticle statistics has recently attracted attention on purely theoretical grounds but also because of its potential applications in topologically protected quantum computing. LÄS MER

  2. 2. Quantum Hall devices on epitaxial graphene: towards large-scale integration

    Detta är en avhandling från Stockholm : Fysikum

    Författare :Arseniy Lartsev; [2015]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; quantum Hall effect; resistance metrology; epitaxial graphene; quantum Hall array; magnetotransport;

    Sammanfattning : Quantum Hall devices have been used as the primary standard of electrical resistance for over two decades, and they are unlikely to be replaced in this role any time soon. The work presented in this thesis was being done towards the goal of establishing epitaxial graphene on silicon carbide as a new material of choice for these devices. LÄS MER

  3. 3. Effects of future climate on carbon assimilation of boreal Norway spruce

    Detta är en avhandling från Göteborg : University of Gothenburg

    Författare :Marianne Hall; Göteborgs universitet.; Gothenburg University.; [2008]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; bud development; climate change; empirical models; gas exchange; photosynthesis; Picea abies; seasonality; whole-tree chambers;

    Sammanfattning : Popular Abstract in Swedish Det norra barrskogsbältet, även kallat de boreala skogarna, sträcker sig runt hela norra halvklotet. Det utgör en tredjedel av den globala skogsytan, och innehåller hälften av den totala mängden kol finns lagrat i samtliga skogsekosystem. LÄS MER

  4. 4. Quantum Hall Wave Functions on the Torus

    Detta är en avhandling från Stockholm : Department of Physics, Stockholm University

    Författare :Mikael Fremling; Stockholms universitet.; [2015]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fractional Quantum Hall Effect; Theoretical Physics; teoretisk fysik;

    Sammanfattning : The fractional quantum Hall effect (FQHE), now entering it's fourth decade, continues to draw attention from the condensed matter community. New experiments in recent years are raising hopes that it will be possible to observe quasi-particles with non-abelian anyonic statistics. These particles could form the building blocks of a quantum computer. LÄS MER

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

    Detta är en avhandling från Stockholm : Department of Physics, Stockholm University

    Författare :Maria Hermanns; Stockholms universitet.; [2010]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; quantum Hall effect; NATURAL SCIENCES Physics Condensed matter physics; NATURVETENSKAP Fysik Kondenserade materiens fysik; teoretisk fysik; Theoretical Physics;

    Sammanfattning : 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. LÄS MER