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 48 for “"Electron tunneling"”.
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Single Electron Tunneling at Large Conductance
In this dissertation I study electron tunneling in nanofabricated metallic structures. Specifically I consider systems containing metallic tunnel junctions that consist of two metallic electrodes separated by a thin oxide layer. Electrons in the leads are described by Fermi liquid theory and …
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Electron tunneling into superconducting mercury films
Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-04-13T20:06:53Z No. of bitstreams: 1 1964_bermon.pdf: 5170834 bytes, checksum: 6986e1e14ca14ef33a75d583bd8b04be (MD5)
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Electron tunneling processes in Si/SiO₂ systems
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.
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Electron tunneling into superconducting mercury films below one degree Kelvin
The tunneling characteristics of an aluminum-aluminum oxide-mercury junction have been measured at temperatures down to Oo35°K. Additional structure over that seen in an earlier, higher-temperature experiment is reported. The data have been analyzed through the use of a computer program based on …
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Electron tunneling and spin relaxation in a lateral quantum dot
… use real-time charge sensing to probe a single-electron lateral quantum dot. The charge sensor is a quantum point contact (QPC) adjacent to the dot and the sensitivity is comparable to other QPC-based systems. We develop an automated feedback system to position the energies of the states in the …
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Surface enhanced Raman spectrometry of C₆₀ in an electron tunneling gap
… to detect the presence of C6o and study its electronic properties. The 532 nm laser source showed Raman peaks at 300,522,930-980, 1570, 1900 and 2150 cm-¹ and the 632 nm laser source showed Raman peaks at 300, 522, 930-980, 1460, and 2124 cm-¹. The device feature (gold, C₆₀, silicon or …
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Electron tunneling into superconducting indium and lead films containing the magnetic impurity manganese
Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-20T19:57:54Z No. of bitstreams: 1 1980_tsang.pdf: 3624550 bytes, checksum: 057faeeb584721949f4f58b3742e2067 (MD5)
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On the Dynamics of Single-Electron Tunneling in Semiconductor Quantum Dots under Microwave Radiation
… in this thesis to reveal the dynamics of single-electron tunneling and to realize quantum bits (qubits) in semiconductor quantum dots. At low temperatures, confined single quantum dots and double quantum dots are realized in the twodimensional electron gas (2DEG) of AlGaAs/GaAs heterostructures. …
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An analysis of exciton transport, electron tunneling, and electromigration in nanotube and nanowire systems
… systems - electromigration in metal nanowires, electron tunneling in single-molecules, and carbon nanotube photovoltaics - are investigated. In the first area, electromigrative failure of metal nanowires has been shown to form single-molecule tunnel junctions, but the process has remained …
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Design and fabrication of electron energy filters for room temperature inelastic electron tunneling spectroscopy
… such as FTIR and Raman are commonly used for electronic nose application. However, their application is limited by factors such as poor sensitivity, selectivity and non-portability. Inelastic electron tunneling spectroscopy (IETS) is an all electronic spectroscopy that has been extensively …
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A study of superconducting lead-indium alloys subjected to hydrostatic pressure using the electron tunneling technique
… the vibrational spectrum of the lattice and the electron-phonon interaction of a metal in both the normal and superconducting states. Specifically, the effects of pressure induced changes on the phonon spectrum F(ω) weighted by the electron-phonon coupling function α<sup>2</sup>(ω), the …
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An electron tunneling investigation of the effects of hydrogen and deuterium impurities on the superconducting properties of lead and indium
Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-17T15:55:01Z No. of bitstreams: 1 1981_nedrud.pdf: 4374582 bytes, checksum: 57b3ca73a61ad6a7c21688126cc1512f (MD5)
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Electron Tunneling Study of Superconductors Doped With Magnetic Atoms and Nonmagnetic Resonant State Atoms: Indium-Chromium, Zinc-Manganese, and Aluminum-Manganese
We have used electron tunneling measurements to determine the density of states of quench-condensed thin films of In-Cr, Zn-Mn, and Al-Mn, and of annealed thin films of Zn-Mn. The results on In-Cr and Zn-Mn were compared with Shiba's theory for magnetic atoms in superconductors. We observed the …
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Electron tunneling study of superconductors doped with magnetic atoms and nonmagnetic resonant state atoms: Indium-chromium, zinc-manganese, and aluminum-manganese
We have used electron tunneling measurements to determine the density of states of quench-condensed thin films of In-Cr, Zn-Mn, and Al-Mn, and of annealed thin films of Zn-Mn. The results on In-Cr and Zn-Mn were compared with Shiba's theory for magnetic atoms in superconductors. We observed the …
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Metal Nanoparticles Deposition On Biological And Physical Scaffolds To Develop A New Class Of Electronic Devices
… of great interest because of their single-electron transport behavior, and high surface charge density. Nanoparticle based devices operate at low power, and are potentially highly stable and extremely robust. Making interconnections to nanoparticle devices, however, has been an impending …
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Methodologies for electromagnetic field modeling for computer aided analysis of multi-domain physical interactions
… generation in metallic contacts due to electron tunneling. The methodology provides for the development of passive intermodulation source models that are compatible with general-purpose electromagnetic and non-linear network analysis-oriented circuit simulators. The derived model allows …
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Design methodology for electron-trap memory cells
… feature size reduction, the field of single-electronics has been developed. Single Electron Tunneling (SET) technology offers the ability to control the transport and position of a single or a small number of electrons. In this thesis we investigate the implementation of arithmetic operations …
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h/e magnetic flux modulation of the energy gap in nanotube quantum dots
… nanotubes act as the Coulomb island of a single electron tunneling transistor. Temperature dependence of the conductivity curves shows that the electron wave functions extend between electrodes, and the energy levels are well-defined so they can be traced. Differential conductivity maps of the …
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