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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.
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...
This dissertation attempts to provide insight into the mixing, hydration and annealing of self-assembled, multilayered films based on precise counting of their doping ions and water content. Several practical applications are then...
The exploration and understanding of new states of matter resulting from reduced dimensionality and electron correlations has been at the forefront of condensed matter physics research for decades. The goal of this dissertation is to...
This dissertation describes several studies of superconducting phenomena in two dimensions. We have investigated the superconductor-insulator quantum phase transitions (SITs) tuned by several parameters, namely disorder (d), magnetic...
This dissertation mainly focuses on the investigation of the magnetic phase diagram of quasi two di- mensional triangular lattice antiferromagnets (TLAFs) Ba₃MNb₂O9 (M = Co2+ (S = 1/2), Mn2+ (S = 5/2)), and their multiferroic properties....
Strongly correlated materials manifest some of the most intriguing behaviors found in condensed matter physics. However, their understanding remains a challenge because they cannot be described using standard theoretical approaches, as...
Transition metal dichalcogenides (TMDs or TMDCs) have garnered much interest recently due to their weakly layered structures, allowing for mechanical exfoliation down to a single atomic layer. As such, it is pertinent to re-examine the...
We report a study on the magnetotransport properties and on the Fermi surfaces (FS) of the ZrSi(Se, Te) semimetals. Density Functional Theory (DFT) calculations, in absence of spin orbit coupling (SOC), reveal that both the Se and the Te...
If one could be built, a quantum computer would be capable of storing and manipulating quantum states with sufficient accuracy to carry out computations that no classical computer can do (most notably factoring integers in polynomial...
In this thesis, we study the entanglement properties of quantum systems to characterize quantum phases and phase transitions. We focus on the free fermion lattice systems and we use numerical calculation to verify our ideas. Behavior of...
The dissertation presents the recent development of the third-generation femtosecond electron diffractometer in Professor Jim Cao's group. Two techniques, femtosecond electron shadow imaging and deflectometry (FESID) and femtosecond...
Buckypapers are thin films of nanostructured membranes made from carbon nanotubes (CNTs), which are amazingly strong nanomaterials that measure 1/50, 000th the diameter of a human hair. Buckypapers have outstanding thermal, electrical and...
When placed in a strong magnetic field, a two-dimensional electron gas can exhibit the quantum Hall effect in which a step like pattern forms in the Hall resistance, RH, which is defined to be the voltage drop perpendicular to the...
The thesis presents the recent development of the 3rd generation femtosecond electron diffractometer in Professor Jim Cao's group and its application to study ultrafast processes in real time. The research activities cover two main...
Despite over thirty years of research, the origin of high-temperature superconductivity remains unsolved. In these thirty years, the phase diagram for the rst-discovered high-temperature superconductors, the cuprates, has been found to...
This thesis investigates a new family of Pd based transition metal chalcogenides which displays unconventional superconducting behavior and also the newly discovered Weyl physics in transition metal monopnictides. The superconductors...
Enhancing the beam energy of particle accelerators like the Large Hadron Collider (LHC), at CERN, can increase our probability of finding new fundamental particles of matter beyond those predicted by the standard model. Such discoveries...
This dissertation presents systematic studies on ordered states of organic conductors investigated mainly by Electron Spin Resonance (ESR). First, we describe an introduction to organic conductors. Organic conductors are based on...
The integration of soft (organic, biological) and hard (semiconducting, metallic) materials is of central importance in a host of emerging areas in materials research and nanoscience. Micro- and nano-scale hybrid soft/hard condensed...
This dissertation details the use of solid state 1H nuclear magnetic resonance (NMR) to investigate three compounds exhibiting phase transitions. The metal-organic framework (MOF) [(CH3)2NH2]Zn(HCOO)3 has a ferroelectric (FE) transition...
Semiconductor spintronics has been widely regarded as a viable pathway to overcome many limitations in the current microelectronics technology. Molecular spintronics, an emerging research area in spintronics, aims to incorporate the...
Silk materials are natural protein-based materials with an exceptional toughness. In addition to their toughness, silk materials also possess complex physical properties and functions resulting from a particular set of amino-acid...
Quantum computers are predicted to outperform classical computers in certain tasks, such as factoring large numbers and searching databases. The construction of a computer whose operation is based on the principles of quantum mechanics...
The research described in this dissertation is concerned with two different types of magnetic materials. Both types of systems involve competing interactions between transition metal ions. New approaches involving magnetic resonance in...
Complex physical phenomena, such as superconductivity, colossal magnetoresistance (CMR) effect, multi-ferroics, metal-insulator transition, quantum phase transition, etc. in strongly correlated materials have been enduring topics in...
An important objective in radiofrequency (RF) coil design for nuclear magnetic resonance (NMR) spectroscopy is improving sensitivity. The low RF losses of thin-film high temperature superconducting (HTS) coils make them well suited to...
This dissertation presents a systematic study of superconductivity and superconducting quantum phase transitions in ultrathin homogeneous Pb films. We have explored the superconductor to insulator quantum phase transitions (SITs) down to...
Nanoscience and nanotechnology research has provided us with new paradigms of technologies to improve human life, but still there is plenty of room to expand its frontiers. In order to do so, we need to pursue the development and study...
Many of the most important complex systems take the form of networks, including biological systems like neural connections and food webs, technological systems like the Internet and power grids, and social networks like political...
Two-dimensional (2D) materials have recently caught much attention due to their exceptional properties and their potential applications in opto-electronics. Graphene, transition metal dichalcogenides (TMDs), and black phosphorus (b-P)...
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.
