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 8 of 8 for “"Tunneling magnetoresistance"”.
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A study of surface roughness issues in magnetic tunnel junctions
This research focuses on the spin-dependent tunneling phenomenon in magnetic tunnel junction. Based on the free electron model, it is found that the tunneling magnetoresistance and the exchange coupling are greatly modified by introducing the interface roughness into the basic …
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Designing a Method for Measuring Magnetoresistance of Nanostructures
… program is to produce nanosized magnetic tunneling junctions, and to study the physical properties of such devices. The physical phenomena of nanosized tunneling junctions are significantly different than that of currently popular micro-sized junctions. There is a considerable amount of …
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Magnetotransport effects in lateral and vertical ferromagnetic semiconductor junctions
This work is an investigation of giant magnetoresistance (GMR), tunneling magnetoresistance (TMR) and tunneling anisotropic magnetoresistance (TAMR)effects in (Ga,Mn) based ferromagnetic semiconductor junctions. Detailed results are published in the following articles: [1] C. Rüster, T. Borzenko, …
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Spin dependent transport in continuous and discontinuous CoFeB/MgO heterostructures
… of MgO. This model studied the variations in tunneling transmission due to inhomogeneity of the barrier. The results show a decrease of the density of the hotspots with the thickness of MgO barrier and that a perfectly insulating barrier is obtained at 1 nm thickness. For the study of the …
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Magnetic Weyl Semimetals for Spintronic Applications
… magnetic dynamics of Mn₃X and the spin-polarized tunneling in Co₂MnGa based spintronic devices remain not fully explored. In this thesis, I establish a theoretical framework to describe the low energy dynamics of strained Mn₃X. Using perturbation theory, I identify three distinct dynamic modes and …
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Landauer's theory of charge and spin transport in magnetic multilayers
… this thesis) including phenomena such as giant magnetoresistance (GMR), tunneling magnetoresistance (TMR) and current induced switching of magnetization. We then describe how to calculate the local charge and spin current in the direction perpendicular to the layers of an arbitrary magnetic …
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Study on graphene-based nanocomposites with special magnetoresistance properties
Magnetoresistance (MR) refers to the change of a material’s electrical resistance under the presence of an external magnetic field. The discovery of new MR phenomena (e.g., giant magnetoresistance (GMR) and tunneling magnetoresistance (TMR)) since the 1980s initiates the revolution of novel …
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A contactless and non-intrusive current measurement technique for low and medium voltage AC power systems
… contactless current measurement using Tunneling magnetoresistive (TMR) sensors is proposed and implemented for AC power systems. The proposed sensors overcome the aforementioned drawbacks of the CTs and provide more accurate outputs for asymmetrical currents during fault conditions. A …