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 49 for “"angle-resolved photoemission"”.
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Angle resolved photoemission studies of silver bromide
… synchrotron radiation is used to obtain both angle resolved photoemission data and angle integrated photoemission data on randomly oriented thick films of metallic silver, thin films of randomly oriented polycrystalline AgBr and AgBri, and epitaxially grown AgBr on an Ag ( 111) single crystal. …
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Angle resolved photoemission studies of silver-bromide
… synchrotron radiation is used to obtain both angle resolved photoemission data and angle integrated photoemission data on randomly oriented thick films of metallic silver, thin films of randomly oriented polycrystalline AgBr and AgBrI, and epitaxially grown AgBr on an Ag (111) single crystal.
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Angle Resolved Photoemission Study of Epitaxial Chromium Dioxide Films
… region of CrO2 have been studied by performing angle-resolved ultra-violet photoelectron spectroscopy (ARUPS) measurements on epitaxial CrO2 films. The CrO2 thin films were deposited on (100) and (110) – oriented TiO2 substrates by chemical vapor deposition. Previous measurements of the …
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Angle-resolved photoemission studies of two-dimensional electron systems
… importance. The major experimental tool is angle-resolved photoemission spectroscopy, which can directly measure the spectral function of the quasiparticle. The study of ultrathin metallic films focuses on the substrate effect on the electronic structure of the film. Thin metallic films can …
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Angle-resolved photoemission studies of thin-film topological materials
… materials are studied by a combined method of angle-resolved photoemission spectroscopy (ARPES) and first-principles calculations. We have studied the electronic structure of Bi2Te3 films using ARPES with circularly-polarized lights. Our ARPES results show a thickness-dependent electronic …
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Angle-resolved photoemission and first-principles studies of topological thin films
… In this thesis research, the combination of angle-resolved photoemission spectroscopy (ARPES) and first principles calculation is used to examine the electronic properties of topological thin films and 2D electronic systems with large spin-orbit splitting. The topological thin films are …
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Angle-resolved photoemission studies of topological thin films and superconducting heterostructures
… high-energy electron diffraction (RHEED). Angle-resolved photoemission spectroscopy (ARPES) is employed to quantify the electronic band structure of all topological films and associated heterostructures. Systems fabricated during this dissertation research include the topological insulators …
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Angle-resolved photoemission and first-principles studies of topological thin-film heterostructures
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-05-01
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Angle-resolved photoemission spectroscopy studies of epitaxially-grown van der Waals ferromagnets
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-04-12 without embargo terms
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Angle-resolved photoemission and first-principles studies of topological semimetals and heterostructures
… devices and quantum computation. In this study, angle-resolved photoemission spectroscopy (ARPES) and first-principles calculations are used to study the electronic properties of topological semimetals and topological heterostructures. The topological heterostructures are prepared using molecular …
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Angle-resolved photoemission studies of quantum-electronic coherence in metallic thin-film systems
… two experiments. The first of these concerns an angle-resolved photoemission study of the electronic structure of Pb films prepared on atomically uniform Ag(111) films. The data host a striking Fabry-Perot-like structure typical of a high-finesse Pb/Ag/Si(111) interferometer. Remarkably, the …
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Angle-Resolved Photoemission Studies on the Many-Body Effects of High-Temperature Superconductor: Bi-2212
… a stable photon-energy helium lamp–based ARPES (angle-resolved photoemission spectroscopy) system with high energy resolution to extract detailed single-particle spectral functions in Bi-2212. Using these spectral functions, we reconstructed both the non-interacting and interacting spin …
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Measuring the Electronic Structure of Atomically Uniform Silver Films Grown on Silicon Using Angle-Resolved Photoemission Spectroscopy
… effects, an important and troubling problem in photoemission spectroscopy. As a result, we are able to clearly identify, for the first time, many surface states buried in the pockets of the d-band manifold that had previously only been theoretically predicted.
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Photoemission and scanning tunneling microscope studies of quantum well and metal layer structures
… metal layer structures have been examined using angle-resolved photoemission and scanning tunneling microscopy. In the past, research pertaining to electronic properties of quantum wells, interfaces, and superlattices has been mostly confined to the realm of semiconductor physics. However, the …
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Geometric and electronic structure of reconstructed semiconductor surfaces
The combination of high-resolution photoemission spectroscopy (PES) using synchrotron radiation, and reflection high-energy electron diffraction (RHEED), along with other techniques, have been used to examine the atomic-scale geometric and electronic properties of clean and adsorbate-covered …
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Surface studies of group IV-VI layered crystals
… for TiS2e and TiS2 have been investigated by angle resolved photoemission spectroscopy. Excitation is provided by He I (21.2 eV) and He II (40.8 eV) ultraviolet radiation. The results indicate that TiSe2 a semimetal with a band overlap of less than 0.25 eV, while TiSi2 a semiconductor. These …
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Photoelectron holography of metal adsorbates on semiconductor surfaces
… investigated using photoelectron holography. Angle-resolved photoemission from the Pb 5d core level shows intensity oscillations as a function of photon energy and emission angle. These constant-initial-state spectra were Fourier inverted to yield three-dimensional real-space images of the …
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Photoemission studies of noble metal semiconductor systems
… high-resolution core-level, valence-band, and angle-resolved photoemission, and high-energy electron diffraction (HEED). In conjunction with the results of other surface studies, notably of scanning tunneling microscopy (STM), the findings reveal significant details of, and correlations …
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Light-induced States and Phase Transitions in Quantum Materials investigated by Photoemission Spectroscopy and Epitaxial Synthesis
… For these studies, we employed time- and angle-resolved photoemission spectroscopy (trARPES) and molecular beam epitaxy (MBE). Through in-depth investigation into these phenomena, this thesis seeks to contribute to the broader understanding of light-matter interactions in quantum materials.
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Investigation of Iron-Based and Topological Superconductors via Point-Contact Spectroscopy
… published results from thermal conductivity, angle-resolved photoemission spectroscopy (ARPES), and Raman spectroscopy, which confirm a lack of nodes in the order parameter and the presence of a gap of magnitude 3 meV. Conductivity spectra were also measured for the half-Heusler materials …
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