Browsing Dept. of Physics - Master's degree by Title
Now showing items 71-90 of 170
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Improvements in simulating discrete deposition models
(Bilkent University, 2021-11)The main purpose of this work is to describe the surface growth phenomena. Initially, we give a brief introduction to the analytical studies, in particular, done by di erential equations such as Edward-Wilkinson and ... -
Impurity effects and symmetry of the order parameter in high-temperature oxide superconductors
(Bilkent University, 1997)Identification of the symmetry of the order parameter (OP) of high-l'c cuprates is important because it helps to understand possible mechanism that govern the physics of these materials. However, up to now, there is no ... -
Impurity effects on superconductors and the electron-phonon interaction
(Bilkent University, 2000)In this thesis effects of impurities on superconductors and electron-phonon interactions in metals are studied. The first part deals with the effect of magnetic impurities on superconductors. In particular, we focus on ... -
Impurity-free quantum well intermixing for high-power laser diodes
(Bilkent University, 2015-08)The demand for ever higher powers and efficiencies from semiconductor lasers, continues. State-of-the-art high power lasers require not only sophisticated designs but also complex fabrication technologies to push the ... -
Integrated optical displacement sensors for scanning force microscopies
(Bilkent University, 2003)In this thesis, we have studied the use of integrated optical waveguide devices acting as integrated displacement sensors on cantilevers for scanning probe microscopes. These displacement sensors include integrated optical ... -
Intrinsic entanglement of photons
(Bilkent University, 2006)Multipole radiation is treated both classically and also quantum mechanically. Dipole atom as a source of radiation is investigated within the Jaynes-Cummings model. Polarization properties of quantum multipole radiation ... -
Investigation of dual-narrowband plasmonic perfect absorbers at visible frequencies for biosensing
(Bilkent University, 2019-12)Since the introduction of first plasmonic perfect absorber (PA) in early 2008 by Landy et al., numerous studies have demonstrated their superior optical performance in frequencies ranging from terahertz to visible region ... -
Investigation of optical residual absorption in graphene
(Bilkent University, 2018-02)Graphene, a 2-dimensional crystal of carbon, can absorb 2.3% of light over a very broad spectrum. Doped graphene, however has a gap in optical absorption due to the Pauli blocking principle. For doped graphene, the interband ... -
Investigation of the low temperature dynamics of a modified toric code
(Bilkent University, 2020-08)Topological quantum systems were introduced as an attempt to overcome the challenge of decoherence due to the self-correcting properties of their energy eigenstates. One of the simplest and most popular topologically ... -
Investigation of the magnetic properties of BSCCO superconductors with scanning Hall probe microscope
(Bilkent University, 2002)A low temperature scanning Hall probe microscope (LT-SHPM) with low noise GaAs/AlGaAs 2DEG Hall probes is used to investigate the magnetic properties of a Ag-sheathed BSCCO-2223 tape and a single crystal BSCCO-2212 ... -
Investigation of thermoelectric properties of 2D β-silicon monotelluride (site)
(Bilkent University, 2018-09)Thermoelectric properties of novel 2D silicon monotelluride (SiTe) are studied using first principles calculations. The plane wave method based on density functional theory as implemented in Vienna ab initio simulation ... -
Janus particles in a Gaussian optical potential: a comparative experimental study
(Bilkent University, 2020-07)It has been shown recently that gold coated silica Janus particles can cluster when subject to a smooth optical field due to the presence of an attractive interaction of hydrodynamic nature (1). Such an interaction comes ... -
Josephson effect in hybrid superconductor-normal metal structures
(Bilkent University, 2000)The clean SNS junction, with a phase difference x across the normal metal barrier and without Fermi level mismatch between the components, is modeled by a step like pair potential. The quasiclassical equations are obtained ... -
Large-scale semi-empirical pseudopotential electronic structure of self-assembled ingaas quantum dots
(Bilkent University, 2018-08)The so-called second quantum revolution emerged at the beginning of the second millennium, opening up a path to realization of spin-qubit-based quantum computing by means of controlling and protecting quantum coherent ... -
Light scattering from core-shell nano-structures : structural coloration
(Bilkent University, 2013)In this work, we produced kilometer-long semiconducting cylindrical nanostructures by using a top-to-bottom nano-fabrication technique which was recently developed in our research group. Comparison of commonly used ... -
Logistic cellular automata
(Bilkent University, 2019-09)Cellular Automata (CA), initially formalized to investigate self-reproducing constructions, are among the most frequently used tools to model and understand complex systems. These computational frameworks are de ned in ... -
Long wavelength GaAs based hot electron photoemission detectors
(Bilkent University, 1999)The increasing rate of telecommunication alters both science and technology, and demands high performance components. Photo detectors are essential components of optoelectronic integrated circuits and fiber optic ... -
Low dimensional structures for optical and electrical applications
(Bilkent University, 2008)Low dimensional structures such as quantum dots have been particularly attractive because of their fundamental physical properties and their potential applications in various devices in integrated optics and microelectronics. ... -
Low loss optical waveguides and polarization splitters with oxidized AlxGa1-xAs layers
(Bilkent University, 1998)Low propagation loss waveguides, operating at 1.55 fim optical wavelength, are fabricated utilizing oxidized AhGai_a;As layers. MBE grown multilayer semiconductor heterostructures are characterized before and after ... -
Low-temperature thermodynamics of finite and discrete quartic quantum oscillator in one dimension
(Bilkent University, 1999)I.' this work we examined a quartic Hamiltonian using two different approaches. We first introduced a mean-field Gaussian approximation in order to handle this Hamiltonian analytically and observed that this approximation is ...
