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 9 of 9 for “"Hall measurement"”.
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The effect of a top gate voltage on the Quantum Hall measurement of a 2DEG InGaAs/InAlAs hetero-structure
… thesis is to investigate the quantization of the Hall resistance "Rxy " as well as the Shubnikov De Haas oscillations of the longitudinal "Rxx " resistance in a two dimensional electron system at different gate voltages. The sample measured utilised the InGaAs/InAlAs heterostructure grown via …
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Hall effect in printed Nanoparticulate Silicon Networks
… was produced with linseed oil. A home-built Hall measurement system was used to characterise layers of doped ink, for which a complete carrier type reversal was observed. Based on the result of elemental mapping, two possible models were suggested to explain the doping effect. A …
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Electronic properties of printed nanoparticulate silicon
… establish their electrical performance using a Hall Measurement System (HMS). To explore properties of the nanoparticulate silicon composite a magnetoconductivity tensor model was developed and applied to extract parameters governing the electrical properties of the material. All the layers …
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Microstructural Evolution in Mocvd-Derived Tantalum-Doped Tin Dioxide Thin Films and Subsequent Property Changes
… studied using four-point probe resistivity and Hall measurement. Optical transparency was also measured in the visible spectrum. The major contribution of this study includes: (1) By introducing Ta during the growth of SnO2 thin films highly conductive and transparent films were prepared. The …
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High Pressure Quantum Oscillation Study of BiTeI and Bi2Te3
… Using Shubnikov-de Haas quantum oscillation measurements, the evolution of the Fermi surface of both materials was tracked as a function of pressure. At ambient pressure, two distinct quantum oscillation frequencies in BiTeI, corresponding to inner and outer Fermi surface orbits as a result …
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Implementation of the Quantum Hall Effect based precision resistance measurement system
The integer Quantum Hall Effect (QHE) occurs when a two-dimensional electron gas (2DEG) is subjected to a strong perpendicular magnetic field and when the system is cooled to low temperatures. The QHE harbours a wealth of unique phenomena. Of interest is the existence of the Quantum Hall Resistance …
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Electrical injection and detection of spin polarization in InSb/ferromagnet nanostructures
… with different widths are calculated from Hall measurements in which the fringing fields of the CoFe electrodes are detected. A magnetic model provides reasonable estimation of the saturation magnetization for micrometer scale geometries. The interface magnetoresistance measurements of …
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Investigation of doped ZnO by Molecular Beam Epitaxy for n- and p-type Conductivity
… (XRD), transmission electron microscopy (TEM), Hall measurement, photoluminescence (PL), and transmittance measurements. Highly conductive (~2×10-4 Ω-cm) and transparent GZO films (> 90% in the visible spectral range) were achieved by MBE under metal-rich conditions (reactive oxygen to …
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THERMAL CONDUCTIVITY OF THIN FILM NIOBIUM DISELENIDE FROM TEMPERATURE-DEPENDENT RAMAN
… at room temperature and we further verified by hall measurements that (NbSe2) conducts heat mostly through electrons. The results shed lights on the potential of Niobium diselenide as a thermoelectric device.