Browsing Theoretical and Applied Physics by Issue Date

Now showing items 41-55 of 55

  • Coherence Control of Tunneling 

    Folarin, Shola Taofeek (AUST, 2019-06-14)
    The phase space representation of quantum mechanics are well known as powerful tools for studying the correspondence between the density operator and classical distributions in phase space. This representation, known as ...

  • Pulsed Lasers in Lidar Application: Models for Optimizing Wind Turbine Performance 

    Iroh, Michael Chijioke (2019-06-22)
    Since the appearance of the first wind turbines at the end of the nineteenth century, wind energy has been considered to be a renewable energy source for not just developed countries but also developing countries as well. ...

  • Theoretical Study of Current-Induced Dynamics of an Antiferromagnetic Skyrmionium 

    Abayomi, Samuel Obadero (2019-06-22)
    In this thesis, we present a theoretical study on the current-induced nucleation and propagation of antiferromagnetic skyrmionium. A skyrmionium, also known as 2π-skyrmion, is a vortex-like magnetic structure characterized ...

  • Structural, Electronic and Optical Properties of Cu 2 Sns 3 Solar Absorber: A First-Principle Density Functional Theory Investigation 

    Isyaku, Abdullahi Odoguje (2019-06-23)
    The development of inexpensive, non-toxic, high efficiency and earth-abundant solar absorbers is critical for terawatt scale implementation of photovoltaics. Cu 2 SnS 3 is a promising earth abundant absorber material that ...

  • Biomechanics of Surface Runoff and Soil Water Percolation 

    James, Makol Madut Deng (2019-06-23)
    In this study, the complex interaction of surface runoff with the biomechanics of soil water transport and heat transfer rate is theoretically investigated using mathematical model that rely on the two phase flows of an ...

  • Topological Antiferromagnetic Magnons 

    Jamiu, Adam Ajibola (2019-07-12)
    We have studied a model for a non-collinear but coplanar antiferromagnetic spin texture on a two dimensional kagome lattice structure in the presence of Dzyaloshinskii-Moriya Interaction (DMI). We observed some interesting ...

  • Stability and Bifurcation Analysis of a Hindmarsh-Rose Neuronal Model With Time Delay 

    Ahmad, Salihu Jibril (AUST, 2019-07-20)
    In this research work, we study and analyse Hindmarsh-Rose neuronal system with time delay. Considering the fast sub-system of the model, all the possible non-negative equilibria are obtained and their local as well as ...

  • Femtosecond laser pulses interacting with atoms 

    Moses, Eshovo Ojo (AUST, 2019-09-16)
    We theoretically investigated a phenomena arising from the interaction of femtosecond pulsed lasers with an Hydrogen atom. The phenomena of interest to us, is the High or der Harmonic Generation (HHG) of soft and hard-Xray ...

  • Ratchet Current Landscape at Quantum Resonance 

    Kabir, Salihu Suraj (2020-12-14)
    The ratchet effect is the rectified motion of atoms using an unbiased driving force. By ‘’unbiased’’ we mean to say that the time-average is equal to zero. This can be accomplished experimentally using cold atoms in a ...

  • Noise-Enhanced Directed Transport of Cold Atoms 

    Odeke, Bonaventure Andrew (2021-03-14)
    The possibility of enhancing directed transport for a driven quantum particle in the presence of noise is investigated. Specifically, we deal with cold atoms trapped in an asymmetric optical lattice potential (ratchet ...

  • Finite Pulse Ratchet Effect of Cold Atoms 

    Chung, Gyang Davou (2021-03-23)
    The thesis presents the modelling and simulation of the rachet effect created by a spatio temporal asymmetry potential. The potential is a coupled spatial asymmetry sin wave and a rectangular pulse train. The effective ...

  • Graphene-Hexagonal Boron Nitride Work Function Response to Uniform Planar Deformations: An ab initio DFT Study 

    Jesutofunmi, Ayo Fajemisin (2021-04-23)
    A two-dimensional hybrid material with graphene and hexagonal boron (h-BN) domain is considered as viable material for future generations of flexible electronic devices due to the tunable band gap, excellent mechanical and ...

  • Controlling XUV’s Harmonics Using Double IR Laser Pulses 

    Korir, Gideon Kiprono (AUST, 2023-11-02)
    Achieving efficient control of electrons and nuclei in atoms and molecules with lasers has been a subject of great interest for decades, in Physics and in Chemistry. One of the current and challenging questions with the ...

  • Decoherence and Nonclassicality of Quantum States 

    Oladipo, Tolani Teslim (AUST, 2023-11-15)
    The phase space representation of quantum mechanics is a well-known powerful tool for studying the correspondence between the density operator and classical distributions in phase space. This representation, known as the ...

  • AB Initio Study of Surface Energy, Surface Stress and Coupling Coefficient of Au (111) 

    Shehu, Mustapha (AUST, 2023-12-10)
    This study investigates ab initio exploration of the Au (111) surface within the generalized gradient approximation, with a primary focus on assessing the convergence properties of this noble metal. An in-depth analysis ...