Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 1293 for “"Condensed Matter"”.
-
Numerical methods in condensed matter physics
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2000.
-
Accurate Continuum Theories For Condensed Matter Systems
… theories to various many-body problems in condensed matter systems. We begin with the construction of a new "classical" density-functional theory for general molecular liquids which is based on an exact evaluation of the free energy of a noninteracting molecular gas. By adding terms which …
-
Investigating anharmonic effects in condensed matter systems
This thesis presents work done on the calculation of the effects of anharmonic nuclear motion on the properties of solid materials from first principles. Such anharmonic effects can be significant in many cases. A vibrational self-consistent field (VSCF) method is used as the basis for these …
-
Some Topological Aspects of Condensed Matter Physics
The angular momentum paradox in Helium 3 is revisited. The edge currents in an infinite half plane and in a cylinder are calculated using the Bogoliubov de Gennes approximation and are shown to be consistent with the expectation of an unit of angular momentum associated with every Cooper pair. The …
-
Many Body Topics in Condensed Matter Physics
Made available in DSpace on 2011-01-14T22:40:31Z (GMT). No. of bitstreams: 3 Anduaga_Inaki.pdf: 628970 bytes, checksum: c30c70bc75738c6ce4b0eb4b5f15ccf7 (MD5) license.txt: 4063 bytes, checksum: 9871e0df74b0ca10170a25e209c70f40 (MD5) Anduaga_Inaki.tex: 251490 bytes, checksum: …
-
Engineering relativistic fermions in condensed matter systems
… governed by the Schrodinger equation. In condensed matter systems, intricate interactions between electrons and nuclei are simplified by using a concept of the quasi-particle. In such description, the electron is considered as a dressed free electron, and its motion is described by …
-
Scaling and Pattern Formation in Condensed Matter Systems
Finally, I study multiscale patterns in polycrystalline materials, with the phase field crystal (PFC) model. I first show that the complex amplitudes representation incorporates the correct form of nonlinear elasticity. I then analyze the plastic properties of the model by applying a shearing …
-
Higher-rank gauge theories in condensed matter physics
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-12-01
-
Modeling rough energy landscapes in defected condensed matter
… investigation of the behavior of defected condensed matter and its evolution over long time scales. The thesis provides original contributions to the methodology used for simulating the slow evolution of complex condensed matter, as well as applications to three problems: hydrogen …
-
Scaling of entanglement entropy in some condensed matter systems
The following thesis focuses on the scaling of entanglement entropy in lower dimensions and is divided into three main parts. Chapter 2 studies the thermal reduced density matrices in fermion and spin systems on ladders. Chapter 3 studies the many-body localization phase transition in a …
-
Computational electronic structure studies of novel condensed matter phases
… surface states found in topological phases of matter. Bulk band-structure calculations and charge density character analysis that I carried out led us to hypothesize that a hexagonal phase of HgSe newly-synthesized bny the Jain group was a 3-D topological insulator. The unique topological …
-
Various Manifestation of Non -Abelian Statistics in Condensed Matter Systems
Since fractional statistics of Laughlin states is reflected in its topological degeneracy, it is natural to expect non-Abelian statistics to have some effect on topological degeneracy. To study the topological degeneracy of the Moore-Read nu = 5/2 quantum Hall state on a torus, we construct the …
-
Defects, topology, and the geometric phase in condensed matter physics
… work on some topological applications in condensed matter physics, particularly geometric phases and defects. The first chapter deals with pentagonal disclinations in graphene and their associated bound states. This problem had been attacked previously, using index theorems, as well as the …
-
The problem of spin and charge separation in condensed matter
… the problem of spin and charge separation in condensed matter. We focus primarily on Mott insulators at half-filling. It is known that one dimensional strongly correlated electronic systems display the phenomenon of spin and charge separation. We show that there exists a qualitatively …
-
Role of fluctuations and defects in select condensed matter problems
… and dynamical properties of systems in the condensed phase. In this work, we focus on three such examples. Firstly, we model the effect of proton fluctuations on the rate of electron transfer in the condensed phase through an electron donor-acceptor assembly linked via an H-bonding bridge. …
-
Ab initio calculations of phonon properties and spectra in condensed matter
Phonons, the quantization of atomic vibrations, are important in studying many solid state properties, ranging from Raman, infrared, and neutron scattering to thermal expansion, specific heat, and heat conductivity to electrical resistivity and superconductivity. Generally, modeling the interatomic …
-
A Correlated 1-D Monatomic Condensed Matter System: Experiment and Theory
A one-dimensional quantum mechanical system is experimentally synthesized and investigated for physical phenomena that it may inherit due to quantum confinement and electron correlations. The experimentally realized system is a self-assembled array of monatomic cobalt wires that are grown under …
-
New analytic and computational techniques for finite temperature condensed matter systems
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1992.
-
Optical, electronic, and dynamical phenomena in the shock compression of condensed matter
Despite the study of shock wave compression of condensed matter for over 100 years, scant progress has been made in understanding the microscopic details. This thesis explores microscopic phenomena in shock compression of condensed matter including electronic excitations at the shock front, a new …
Page 1 of 65