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Some of the material in is restricted to members of the community. By logging in, you may be able to gain additional access to certain collections or items. If you have questions about access or logging in, please use the form on the Contact Page.
Emergent phenomena are one of the most profound topics in modern science, addressing the ways that collectivities and complex patterns appear due to multiplicity of components and simple interactions. Ensembles of random Hamiltonians...
We present the results of our numerical studies on the transport properties of strongly correlated nanostructures, particularly quantum dots and single molecules. The main focus is on correlation, interference and phononic effects....
A search is presented for a light pseudoscalar Higgs boson using full Run 2 data (2016-2018) collected by the CMS (Compact Muon Solenoid) experiment at the LHC (Large Hadron Collider), corresponding to an integrated luminosity of 137.60...
High magnetic fields are used to kill superconductivity and probe what happens to system when it cannot reach the ideal ground state, i.e. what is the normal-state ground state? Early work in High-Tc, where the application of magnetic...
Type Ia supernovae (SNe Ia) play a vital role in the discrimination of different cosmological models. These events have been shown to be standardizable based on properties of their light curves during the early-time photospheric phase....
It has been believed for over 30 years that matter will become a deconfined state of quarks and gluons at sufficiently high energy densities. As the energy density increases, deconfinement occurs due to Debye screening of the color...
Nb 3 Sn conductors are important candidates for high-field magnet applications for Future Protonor Muon Colliders, and they continue to be widely used for many laboratory and NMR magnets. However, the critical current density, J c, of...
A search was conducted for evidence of large extra dimensions (LED) at Fermi National Accelerator Laboratory's Tevatron using the D0 detector. The Tevatron is a proton-antiproton collider at a center of mass energy of 1.96 TeV. Events...
One of the biggest roadblocks currently in the way of large scale quantum computation is the limited relaxation times of the current state of the art quantum computers. This limitation is due to the use of superconducting qubits, which...
This dissertation focuses on the transport properties of the high-temperature superconductor LSCO in high magnetic fields, particularly the longitudinal magnetoresistance around optimum doping. In this region of the phase diagram the...
The exploration of new paradigms for micro- and nanoelectronics has engendered several exciting new research fields including molecular electronics and spintronics. Two essential ingredients of the device structures are materials and...
Clustering in atomic nuclei is an interesting phenomenon that has been studied extensively in the past. However, most studies were related to clustering in α-like 4N nuclei. This work is focused on clustering in N≠Z non-self-conjugate...
We present the calculation of Next-to-Leading-Order Quantum Chromo Dynamics corrections for the production of W or Z weak bosons associated with a bottom anti-bottom quark pair at hadron colliders (ppbar, pp to W/Z bbbar), including the...
The photoproduction of ω mesons and π0 ω meson pairs is studied with the intention of providing data which will be useful in isolating baryon resonances. The data used for this analysis was recorded using the CBELSA/TAPS experiment in...
Simple SUSY GUT models based on the gauge group SO(10) require t-b-t Yukawa coupling unification, in addition to gauge coupling and matter unification. The Yukawa coupling unification places a severe constraint on the expected spectrum...
This thesis studied the electronic structure at the Fermi level and the topological character of topological semimetals via torque magnetometry. Torque magnetometry measures the anisotropic magnetization of the sample in a tilted...
18Ne(α, p)21Na reaction is one of the reactions providing a pathway for breakout from the hot CNO cycles to the rp-process in Type I X-ray bursts. The actual conditions under which the breakout occurs depend critically on the...
This dissertation encompasses an optical spectroscopic study of the temperature and magnetic field dependence of two magnetic materials with significant electron-electron correlation: antiferromagnetic MnTiO3 and frustrated spin-dimer...
Molecular magnets containing one or more open shell elements are one of the proposed systems for quantum information processing that can be chemically engineered to have well-separated and stable quantum states. This dissertation...
In this thesis we have combined the idea of cluster expansion and path integration to develop the quantum version of cluster and virial expansion. We derive a diagrammatic series expansion for different thermodynamic quantities like free...
In this study two aspects of the geomagnetic field have been investigated. The first part focuses on perturbations of the external field, as seen by the CHAMP satellite and predicted by the Thermosphere-Ionosphere Electrodynamic General...
Mesons composed of heavy quark-antiquark pairs, known as quarkonia, provide the only direct probe of the screening length in the deconfined state of quarks and gluons, known as the quark gluon plasma (QGP), which is believed to be...
A path integral Monte Carlo investigation of the role of defects in ordered 4He systems has been conducted. We find that interstitial defects in two- and three-dimensional solid 4He can lead to a small but non-zero superfluid fraction, ...
Predictions regarding the excited baryon spectrum provided by symmetric quark models called Constituent Quark Models (CQMs) show good agreement with experimental measurements in the low-energy region (less than ≈ 1.8 GeV). The mass...
Several multiband models for Colossal Manetoresistance Materials and Diluted Magnetic Semiconductors are investigated within Dynamical Mean-Field Theory. The theoretical analysis of such models uses extensively the parametrization method...
This dissertation is a theoretical and computational examination of electronic properties of topological materials, such as topological insulators and Weyl semimetals. Our work is motivated by various experimental observations and...
The heavy fermion intermetallic compound URu₂Si₂ continues to attract attention owing mainly to the occurrence of an unknown ordered state at T₀ ~ 17.5 K that is referred to as "hidden order" (HO). HO remains enigmatic, despite more than...
We report the synthesis and characterization for two single crystalline lanthenide-host compound Sm$_{6}$T$_{4}$Al$_{43}$ (T = Mo and W), that form in the hexagonal Ho$_{6}$Mo$_{4}$Al$_{43}$ prototype. The Sm ions reside within T/Al...
This dissertation examines the observability of neutralino dark matter in the context of supersymmetric models constrained constrained by the recent WMAP data on the relic density of cold dark matter. The neutralino-nucleon scattering...
It is always very nice when a new discovery found in an old material. The spinel vanadate has become one of the hot topics in the condensed matter physics both experimentally and theoretically. It shows many interesting behaviors due to...
Supersymmetric grand unified models based on the SO(10) gauge group are especially attractive in light of recent data on neutrino masses. The simplest SO(10) SUSY GUT models predict unification of third generation Yukawa couplings (t –b ...
Understanding Type Ia Supernovae provides an opportunity to study a wide range of modern physics as well as develop a key tool in cosmology. Here, we identify and investigate new observational signatures of underlying physical processes...
Progress in nanotechnology is trending towards applications which require the integration of soft (organic or biological) and hard (semiconductor or metallic) materials. Many applications for functional nanomaterials are currently being...
The underlying physics and spin dynamics that govern magnetic molecules yield ideal behavior for their potential use as qubits in a quantum computer. To characterize the spin dynamics of these magnetic molecules, electron spin resonance ...
Low-spin states were studied in 30Al following the β decay of 30Mg produced in the fragmentation of 140 MeV/AMU 48Ca. Analysis of the β-γ and β-γ-γ coincidences revealed a new 1+ state at 2413 keV, confirmation of the level scheme, and a...
The understanding of magnetic materials has become crucial to both fundamental physics and technological advancement. Particularly, the interplay between magnetic and electronic properties has given rise to such novel physics as high...
The Standard Model (SM) of particle physics offers the most complete quantum description of the known universe to date, however is unable to address some still unanswered questions. Supersymmetry (SUSY) is a theory which proposes partner...
This study of the nuclear structure of $^{24}$Na, $^{35}$S, $^{41}$K, and $^{41}$Ca has been carried out at Florida State University's (FSU) John D. Fox Superconducting Linear Accelerator Laboratory. These experiments were performed...
It is demonstrated that inflatable structures can provide large amounts of stiffness compared to traditional structures of the same mass. A variety of inflatable structures are investigated theoretically. A pressurized lobed cylindrical...
Experimental results on the nuclear structure of 44S and 26Si will be reported in this thesis. 44S is studied because of its interest in understanding how nuclei behave far from stability. 26Si is studied because of the impact of...
We explore the symmetries and systematics of the mass spectrum of hadrons with two heavy quarks. We also apply these symmetries to the strong decays of baryons with two heavy quarks. We explore the ramifications of a proposed symmetry...
We present a study of the reaction $ \gamma p \rightarrow Xp \rightarrow K_{S}^{0}K_{S}^{0} p\rightarrow \pi^{+}\pi^{-}\pi^{+}\pi^{-}p$ using data collected by the GlueX Collaboration during the Spring 2017 run. The GlueX Experiment is...
Magnetic two-dimensional (2D) materials, proposed to exhibit non-trivial electronic topology, have been discovered recently. In particular, a potential for devices based on van der Waals (vdW) ferromagnetic heterostructures was...
The gas within dark matter halos of galaxies and clusters contains information about the baryon content of the universe that is not found anywhere else. Precise understanding of the nuances of this gas is critical to understanding the...
This dissertation is a systematic theoretical effort to investigate the low-energy properties of random antiferromagnetic quantum spin-1/2 systems beyond one dimension. We use the celebrated real space renormalization group (RSRG)...
The dissertation presents the recent development of the 3rd generation femtosecond electron diffractometer in Professor Jim Cao's group. Two techniques, femtosecond electron shadow imaging and deflectometry (FESID) and femtosecond...
Electrophoresis is one of the most powerful tools used to separate biological molecules by size in a supporting medium under the influence of an electric field. Pluronic F127 gel, introduced as a new sieving medium for electrophoresis in...
The study of the deconfining phase transition or crossover is important for the understanding of properties of nuclear matter and the quark gluon plasma. Heavy ion collisions experiments are capable of creating conditions necessary for...
We examine two wave function optimization methods for producing the ground state. The first is a novel method for optimizing the location of the nodes of the fermion ground-state using a combination of diffusion Monte Carlo (DMC) and...
The tremendous interest in using the spin degree of freedom in electronic devices has led to an extensive endeavor to investigate the intrinsic spin polarization of various magnetic materials. The work done here expands upon existing...
Some of the material in is restricted to members of the community. By logging in, you may be able to gain additional access to certain collections or items. If you have questions about access or logging in, please use the form on the Contact Page.
