Essays about: "non-equilibrium"

Showing result 6 - 10 of 29 essays containing the word non-equilibrium.

  1. 6. Simulating the Effect of Spatial Potential Variation in Nanodevices with the NEGF Method

    University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

    Author : Markus Berthilsson; [2022]
    Keywords : Technology and Engineering;

    Abstract : In this master thesis nanowires have been simulated to study the effect of spatial imperfections in the nanowires. This spatial imper- fection took the form of potential fluctuations in the conduction band across the wire. READ MORE

  3. 7. Green's Functions Investigations in Quantum Transport Geometries

    University essay from Lunds universitet/Matematisk fysik; Lunds universitet/Fysiska institutionen

    Author : Philip Johansson; [2022]
    Keywords : Quantum transport; Green s functions; self-energy; non-equilibrium; many-body physics; Physics and Astronomy;

    Abstract : In this thesis we employ the non-equilibrium Green’s function (NEGF) method to study both finite and infinite systems. We develop a codebase capable of computing the steady state interacting NEGF in open systems, i.e. READ MORE

  4. 8. Machine-Learning for Lattice Models in and out of Equilibrium

    University essay from Lunds universitet/Matematisk fysik; Lunds universitet/Fysiska institutionen

    Author : Johannes Sandberg; [2021]
    Keywords : Physics and Astronomy;

    Abstract : Machine-learning methods have in recent years seen a great deal of use in condensed matter physics. In this thesis we apply such methods, specifically machine-learning with artificial neural networks, to the equilibrium and non-equilibrium description of the Hubbard and Hubbard-Holstein models. READ MORE

  5. 9. Influence of strain and point defects on the Seebeck coefficient of thermoelectric CoSb3 : Inverkan av töjnings och punktdefekter på Seebeck-koefficienten för termoelektrisk CoSb3

    University essay from Malmö universitet/Fakulteten för teknik och samhälle (TS)

    Author : Ibrahim Awala; [2021]
    Keywords : Cobalt antimonide; Thermoelectric; Strain; Seebeck coefficient; oxidation; DFT; DFT-MD;

    Abstract : Many studies and experiments have been conducted over the years to find solutions to the electricity problem. This issue is not just related to how fossil fuels are dispensed. Also, the environmental concerns associated with using fossil fuels have become a severe issue, which is a major cause of environmental pollution and ozone layer damage. READ MORE

  6. 10. Increased Drought and Fire Intensity Regimes Reduce the Ecological Resilience of Mediterranean Forests in the South-West Australian Floristic Region

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Shareen Sanders; [2020]
    Keywords : Allometric models; Above-ground biomass AGB ; drought; fire; disturbance; understorey; resilience; Mediterranean.;

    Abstract : Future climate projections suggest an increase in average temperature as well as a decrease in average winter rainfall across the south-west Australian floristic region (SWAFR). These adverse future climatic conditions will amplify the intensity and frequency of disturbance events such as drought and fire. READ MORE