Now showing items 1-14 of 14

    • Analytical Methods in Mesoscopic Systems 

      Mason, Douglas Joseph (2012-10-16)
      The propsect of designing technologies around the quantum behavior of mesoscopic devices is enticing. This thesis present several tools to facilitate the process of calculating and analyzing the quantum properties of such ...
    • A Classical Perspective on Non-Diffractive Disorder 

      Klales, Anna (2016-01-28)
      The unifying themes connecting the chapters in this dissertation are the profound and often surprising effects of disorder in classical and quantum systems and the tremendous insight gained from a classical perspective, ...
    • The Classical-Quantum Correspondence of Polyatomic Molecules 

      Pittman, Suzanne Michelle (2016-05-10)
      In this thesis, we study the classical-quantum correspondence of polyatomic molecules to further understand their rotational and vibrational behavior. More specifically, we focus on two different scenarios: (1) completely ...
    • Coherent scattering in two dimensions: graphene and quantum corrals 

      Barr, Matthew Christopher (2014-02-25)
      Two dimensional electronic materials provide a vibrant area for applying basic quantum mechanics and scattering theory. In quantum corrals, multiple scattering leads to resonances closely approximating eigenstates of an ...
    • Development of a Trajectory Model for the Analysis of Stratospheric Water Vapor 

      Koby, Timothy Robert (2016-05-14)
      To study stratospheric water vapor, a new trajectory model was created. The model is built from first principles specific to stratospheric motion and can run on any gridded dataset, making it more versatile than current ...
    • Imaging and Manipulating Electrons in a 1D Quantum Dot with Coulomb Blockade Microscopy 

      Qian, Jiang; Halperin, Bertrand I.; Heller, Eric J. (American Physical Society, 2010)
      Motivated by the recent experiments by the Westervelt group using a mobile tip to probe the electronic state of quantum dots formed on a segmented nanowire, we study the shifts in Coulomb blockade peak positions as a ...
    • Imaging Coherent Transport in Graphene (Part I): Mapping Universal Conductance Fluctuations 

      Berezovsky, Jesse; Borunda, Mario; Heller, Eric J.; Westervelt, Robert M. (Institute of Physics, 2010)
      Graphene provides a fascinating testbed for new physics and exciting opportunities for future applications based on quantum phenomena. To understand the coherent flow of electrons through a graphene device, we employ a ...
    • Imaging Cyclotron Orbits of Electrons in Graphene 

      Bhandari, Sagar; Lee, Gil-Ho; Klales, Anna Margaret; Watanabe, Kenji; Taniguchi, Takashi; Heller, Eric J.; Kim, Philip; Westervelt, Robert M. (American Chemical Society (ACS), 2016)
      Electrons in graphene can travel for several microns without scattering at low temperatures, and their motion becomes ballistic, following classical trajectories. When a magnetic field B is applied perpendicular to the ...
    • Imaging Universal Conductance Fluctuations in Graphene 

      Borunda, Mario; Berezovsky, Jesse; Westervelt, Robert M.; Heller, Eric J. (American Chemical Society (ACS), 2011)
      We study conductance fluctuations (CF) and the sensitivity of the conductance to the motion of a single scatterer in two-dimensional massless Dirac systems. Our extensive numerical study finds limits to the predicted ...
    • Raman Scattering in Carbon Nanosystems: Solving Polyacetylene 

      Heller, Eric J.; Yang, Yuan; Kocia, Lucas (American Chemical Society, 2015)
      Polyacetylene has been a paradigm conjugated organic conductor since well before other conjugated carbon systems such as nanotubes and graphene became front and center. It is widely acknowledged that Raman spectroscopy of ...
    • Semiclassical Time Propagation and the Raman Spectrum of Periodic Systems 

      Kocia, Lucas (2016-05-20)
      The first half of this thesis introduces the time-dependent W.K.B. approximation of quantum mechanics from basic principles in classical and quantum mechanics. After discussing the van Vleck-Morette-Gutzwiller propagator, ...
    • Strong quantum scarring by local impurities 

      Luukko, Perttu J. J.; Drury, Byron; Klales, Anna; Kaplan, Lev; Heller, Eric J.; Räsänen, Esa (Nature Publishing Group, 2016)
      We discover and characterise strong quantum scars, or quantum eigenstates resembling classical periodic orbits, in two-dimensional quantum wells perturbed by local impurities. These scars are not explained by ordinary scar ...
    • Theoretical study of exciton transport in natural and synthetic light-harvesting systems 

      Valleau, Stephanie (2016-05-04)
      In the first part of this dissertation, we investigate on the presence of quantum effects in the exciton dynamics of the Fenna-Matthews-Olson photosynthetic complex of green sulfur bacteria using an atomistic Quantum ...
    • Theory of Graphene Raman Scattering 

      Heller, Eric J.; Yang, Yuan; Kocia, Lucas; Chen, Wei; Fang, Shiang; Borunda, Mario; Kaxiras, Efthimios (American Chemical Society (ACS), 2016)
      Raman scattering plays a key role in unraveling the quantum dynamics of graphene, perhaps the most promising material of recent times. It is crucial to correctly interpret the meaning of the spectra. It is therefore very ...