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.
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Showing 1 to 15 of 15 for “"Low Temperature Physics"”.
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Low temperature studies of transport in silicon MOSFETs.
… outcome of three years work in the semiconductor Physics group at the Cavendish Laboratory, during which time I was financially _supported by the Science and Engineering Research Council. Many thanks are due to my supervisor, Mike Pepper, for his advice and enthusiastic encouragement. I would also …
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Ultracold ²³Na⁶Li molecules in the triplet ground state
… dipolar interactions is a long-standing goal in low temperature physics. NaLi is a fermionic molecule with an electric dipole moment of 0.2 Debye and a magnetic dipole moment of 2 [mu]B in its triplet ro-vibrational ground state. The formation of an ultracold molecule with both electric and …
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Adapting a Cryogen-Free Measurement System for Geological Materials: Method Development for Thermal Conductivity Measurements Below 300 K with Applications to Planetary Science
… As such, little is known about internal heat flow. Thermal models are used to predict thermal evolution, but the limited availability of thermal property data constrains their accuracy. To improve these models, meteorites provide a way to investigate thermal properties under controlled …
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Electron Tunnelling Study of High-Temperature Superconductors
… out between June 1987 and October 1991, in the Low Temperature Physics Group at the Cavendish Laboratory, Cambridge. The aim of this work was to use electron tunnelling spectroscopy to measure the density of excitation states of the recently discovered high-temperature superconductors. …
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High-speed terahertz signal control and read-out for future terahertz communication systems
… 3 presents top-gate devices that operate with a lower bias voltage and higher modulation speed compared to back-gate devices. In back-gate devices, the gate voltage is applied across a p-doped silicon substrate and a 300 nm SiO2 insulating layer. The gate voltage required (approximately 10 V - …
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Transport properties of a Bose-Einstein condensate with tunable interactions in the presence of a disordered or single defect potential
… of the foundational models of condensed matter physics. The observation of a critical velocity for the breakdown of superfluidity in a BEC and the superfluid to Mott insulator transition observed in a BEC trapped by an optical lattice are but two examples of the, by now, dozens of exciting …
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On-Chip Multiplexers for Transferable Nanomaterials: Design, Fabrication and Applications
… field-effect transistors at cryogenic temperatures, is described. The channel in each transistor in the array is a nanomaterial which is transferred onto the multiplexer device, and each transistor in the array can be measured individually. The underlying multiplexer device is …
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Transport studies in graphene-based materials and structures
… differential thermal conductance (NDTC) at large temperature biases. We prove a theorem on the existence of NDTC in general one-dimensional diffusive thermal transport. We synthesis graphene composites and characterize their electric and thermal properties. Their electrical conductivity follows …
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Superconductivity in the proximity of a quantum critical point
… transitions to absolute zero can result in a low temperature quantum fluid which deviates strongly from typical metallic behaviour; unconventional superconductivity can be induced by the strange metal region surrounding the zero-temperature phase transition. In this thesis we focus on three …
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Probing Symmetry and Disorder Effects in the Fractional Quantum Hall States of the Second Landau Level
… confined to two dimensions, cooled to cryogenic temperatures, and placed in a strong perpendicular magnetic field exhibit a set of ground states referred to as the fractional quantum Hall states (FQHS). The FQHSs forming in the region called the second Landau level are some of the most exciting …
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Ultracold quantum scattering in the presence of synthetic spin-orbit coupling
… plasmas. In this dissertation, we study the low-energy atomic collision physics in the presence of synthetic gauge fields, which are generated by atom-light interaction. One category of synthetic gauge fields is the artificial spin-orbit coupling. We discuss three different aspects in …
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Vapor-liquid phase equilibria at low temperatures
Abstract not available.
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Anderson Localization in Low-Dimensional Systems with Long-Range Correlated Disorder
It has been known for over a half century that when disorder is introduced into a crystalline system through impurities, vacancies, grain boundaries, or other mechanisms that break the translational invariance of the system, the electronic eigenstates will localize in space. This phenomenon is …