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 20 of 59 for “"Spin Transport"”.
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Spin Transport in Organic Semiconductors
… potential for use in solid state devices for spintronics and spin-based information processing. Organic semiconductors composed of mainly light elements appeal to the field of spintronics due to their long spin lifetime originating from their weak spin-orbit coupling. The significant progress …
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Spin transport in few-layer graphene
Graphene spintronics refers to spin injection, spin transport and spin detection, using magnetic electrodes and single/multilayer graphene. Although it has been very actively researched since 2006, there is still disagreement regarding the spin diffusion length (lsf). This is partially because …
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Quantum spin transport in paramagnetic systems
We have studied the transport of magnetization and energy in systems of spins 1/2 on a lattice at high temperature. This work was motivated by recent experiments which observed "spin diffusion" among the dipolar coupled nuclear spins of the insulator calcium fluoride, under conditions where it was …
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Spin transport through nanopillar superconducting spin valves
… into the interaction of non-equilibrium spin currents with superconductivity using spin valves, where the difference in resistance between the antiparallel (AP) and parallel (P) alignments of the magnetic layers within the device [magnetoresistance, ∆R = RAP − RP ] has been used to …
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semiconducting carbon nanotube transistors: electron and spin transport properties
… at room temperature, and possibly very long spin-scattering lengths. This thesis will describe experiments to probe the charge-and spin-transport properties of long, clean individual SWNTs prepared by chemical vapor deposition and contacted by metal electrodes. A SWNT field-effect transistor …
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Electronic spin transport in bilayer and single layer graphene
… Due to its excellent properties, such as long spin relaxation length and gate-tunable spin transport, graphene is expected to be a potential candidate for spintronics applications. In this thesis, the systematic study of the spin relaxation mechanisms in bilayer and single layer graphene is …
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Heat, Charge and Spin Transport of Thin Film Nanostructures
<p>Understanding of fundamental physics of transport properties in thin film nanostructures is crucial for application in spintronic, spin caloritronics and thermoelectric applications. Much of the difficulty in the understanding stems from the measurement itself. In this dissertation I present our …
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Magnetism and spin transport studies on indium tin oxide
… Indium Oxide based materials in next generation spin-transport electronic applications. Initial studies focused on the optimisation of the electrical properties of Indium Oxide (In2O3) and Tin(Sn)-doped Indium Oxide (ITO) thin films grown using DC magnetron sputtering. The manipulation of various …
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Nanoscale electron, phonon and spin transport in thermoelectric materials
… the past decade to decouple the charge and heat transport and thus improve the material performance. Most of the progress has been based on a more detailed understanding of the transport and interaction of fundamental energy carriers, such as electrons and phonons in most semiconductors, and …
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CHARGE AND SPIN TRANSPORT STUDIES IN GRAPHENE AND BLACK PHOSPHORUS
Transport studies in graphene and black phosphorus two-dimensional systems will be explored in this thesis. Specifically, I studied the spin transport and spin characteristics of graphene subjected to an enhancement of its otherwise low intrinsic spin-orbit coupling. Taking advantage of its …
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Theory and simulation of magnetism and spin transport in semiconductors
<P>A THEORETICAL MODEL OF SPIN-TRANSPORT IN FERROMAGNET-SEMICONDUCTOR HYBRID STRUCTURES WHICH TAKES INTO ACCOUNT THE EFFECTS OF INTERFACE RESISTANCE HAS BEEN PRESENTED. SPIN-INJECTION EFFICIENCY AND MAGNETORESISTANCE WHICH ARE THE KEY PARAMETERS IN ANY SPINTRONICS DEVICE ARE STUDIED IN DETAIL. IT …
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Landauer's theory of charge and spin transport in magnetic multilayers
… Keldysh formalism has been used to study the spin transport effects found in magnetic multi-layered nanostructures. We formulate a new methodology based on Landauer and show it to be in very good qualitative agreement with Keldysh. However, our theory provides more information regarding the …
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Taking Steps Towards Superfluid-like Spin Transport in Metallic Ferromagnets
Conventional electronics rely on the transport of electrons through a circuit to carry information. This comes with ever-present Joule heating as a result of the resistive scattering of electrons. Recent works in the field of spintronics have focused on using magnetic excitations (e.g., spin waves) …
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Experiments with synthetic spin-orbit coupling and spin transport in Bose Einstein Condensates
… thesis I will describe my experiments to study spin transport of spin Bose Einstein Condensates (BECs) with synthetic spin-orbit coupling. First I will describe procedures used to reproduce previous experiments with synthetic gauge fields in Bose-Einstein Condensates, from constant vector …
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Thermal, Electrical, and Spin Transport: Encompassing Low-Damping Ferromagnets and Antiferromagnetic/Ferromagnetic Heterostructures
… difficulties, the fields of thermoelectrics, spintronics, and spincaloritronics emerge as contemporary solutions, each presenting unique advantages. Thermoelectric devices, based on the Seebeck effect, other a passive, carbon-free energy generating solution from waste heat. Although current …
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The nature of band gaps in ionic compounds and band structure aspects of spin transport
Contains fulltext : 145590.pdf (Publisher’s version ) (Open Access)
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An efficient full-potential linearized augmented plane wave electronic structure method for charge and spin transport through realistic nanoferronic junctions
… allow the efficient computation of charge and spin transport properties in realistic nanoferronic materials and nanostructures. First, an order-N implementation of the FLAPW method is presented, which allows the efficient calculation of electronic transport in magnetic tunnel junctions (MTJs) …
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Tuning Spin Currents with Ultrathin Heavy Metal Microstructure
All-metallic spintronic heterostructures have the ability to generate pure spin currents at low resistance-area products via spin-orbit coupling. Heavy metal/ferromagnet (HM/NM) bilayers are often used in this context to extract key spin-dependent parameters such as the spin Hall angle, 𝜃, and spin …
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