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 7 of 7 for “"Spin-dependent Transport"”.
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Spin dependent transport in continuous and discontinuous CoFeB/MgO heterostructures
This thesis is devoted to the study of spin dependent transport between CoFeB electrodes through an MgO barrier in ordered and disordered multilayer systems. The local electrical integrity of the MgO barrier was studied using Ru and CoFeB bottom electrodes by a modified conducting atomic force …
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Dielectric reliability and spin dependent transport in Co-Fe-B/MgO/Co-Fe-B magnetic tunnel junctions
… recently emerging and rapidly growing field of spin electronics or spintronics. This area of study allies electronics and magnetism. It uses the spin of the electron to obtain new proporties or functions. These developments concern a new type of non-volatile memories. In contrast, conventional …
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DNA Electronics
… We predict, using a tight-binding model, that spin-dependent transport can be observed in short DNA molecules sandwiched between ferromagnetic contacts. In particular, we show that a DNA spin-valve can be realized with magnetoresistance values of as much as 26% for Ni and 16% for Fe contacts. …
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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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Magnetoconductance and Dynamic Phenomena in Single-Electron Transistors
… not magnetic, such that there is no net electron spin, the zero temperature resistivity due to impurity scattering is proportional to the impurity concentration. When the impurity is magnetic, typically spin-1/2, the resistivity rises logarithmically as the temperature is lowered below a …
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Giant Magnetoresistance - eine ab-initio Beschreibung
… Arbeit ist ein Beitrag zur Theorie des spinabhängigen Transports in magnetischen Vielfachschichten. Es wird erstmalig eine parameterfreie Beschreibung des Giant Magnetoresistance (GMR) vorgelegt, welche detaillierte Einsichten in die mikroskopischen Vorgänge gestattet. Die ab-initio …
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Mesoscopic wave phenomena in electronic and optical ring structures
… In Teil I der Arbeit befassen wir uns mit spinabhängigem Transport von Elektronen in effektiv eindimensionalen Ringen in Gegenwart inhomogener Magnetfelder. Wir benutzen die exakten Lösungen der Schrödinger-Gleichung im allgemeinen nicht-adiabatischen Fall in einem …