Transport in Multilayered Nanostructures: The Dynamical Mean-field Theory Approach

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This novel book is the first comprehensive text on Dynamical Mean-Field Theory (DMFT), which has emerged over the past two decades as one of the most powerful new developments in many-body physics. Written by one of the key researchers in the field, the volume develops the formalism of many-body Green’s functions using the equation of motion approach, which requires an undergraduate solid state physics course and a graduate quantum mechanics course as prerequisites. The DMFT is applied to study transport in multilayered nanostructures, which is likely to be one of the most prominent applications of nanotechnology in the coming years. The text is modern in scope focusing on exact numerical methods rather than the perturbation theory. Formalism is developed first for the bulk and then for the inhomogeneous multilayered systems. The science behind the metal-insulator transition, electronic charge reconstruction, and superconductivity are thoroughly described. The book covers complete derivations and emphasizes how to carry out numerical calculations, including discussions of parallel programing algorithms. Detailed descriptions of the crossover from tunneling to thermally activated transport, of the properties of Josephson junctions with barriers tuned near the metal-insulator transition, and of thermoelectric coolers and power generators are provided as applications of the theory.

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ELECTRODEPOSITION OF MAGNETIC NANOWIRES AND NANOTUBES: ELECTRODEPOSITION OF Multilayered CoNiFe/Cu Nanowires and Nanotubes for Giant Magneto Resistance Sensing

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The current perpendicular to the plane giant magneto- resistance (CPP)-(GMR) effect makes multilayered nanowires of huge interest as magnetic sensor materials. In addition to the cost-effectiveness, electrodeposition is one of the few methods that can overcome the geometrical restrictions of inserting metals into very deep nanometric recesses, making it the favored method for nanowire and nanotube fabrication. In this work, the quaternary FeCoNiCu alloy system was investigated in order to electrodeposit multilayered nanowires/nanotubes for GMR effect. The choice of CoNiFeCu quaternary system allows the flexibility to optimize the magnetic property (GMR) by varying deposit composition. Layer thicknesses were controlled and varied for commercially viable GMR results. Greater than 10 % GMR, at room temperature and at small magnetic fields (< 0.5 Tesla), is reported for the first time in CoNiCu/Cu and CoNiFeCu/Cu nanowires. CoNiCu nanotubes were also fabricated for the first time. Conditions for electrodepositing multilayered nanotubes that exhibit GMR has been established and is a pioneering effort in the field.

BUY FROM AMAZON-->> ELECTRODEPOSITION OF MAGNETIC NANOWIRES AND NANOTUBES: ELECTRODEPOSITION OF Multilayered CoNiFe/Cu Nanowires and Nanotubes for Giant Magneto Resistance Sensing