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.
Results
Showing 1 to 20 of 21 for “"photoemission studies"”.
-
Photoemission Studies of Thin Metallic Overlayer Systems
Angle-resolved photoemission spectroscopy was used to study Ag(111) monolayers on six different substrates: Ni(001), Ni(111), Cu(001), Cu(111), Au(111), and Si(111)-(7x7). The properties of surface states were also examined for several related systems: Cu(111) covered by various thicknesses of Ag, …
-
Photoemission studies of noble metal semiconductor systems
… 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 between, these …
-
Photoemission studies of thin metallic overlayer sytems
Angle-resolved photoemission spectroscopy was used to study Ag(lll) I monolayers on six different substrates: Ni(OOl), Ni(lll), Cu(OOl), Cu(lll), Au(lll), and Si(lll)-(7x7). The properties of surface states were also examined for several related systems: Cu(lll) covered by various thicknesses of …
-
Angle resolved photoemission studies of silver bromide
… 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. The …
-
Angle resolved photoemission studies of silver-bromide
… 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.
-
Photoemission Studies of Novel Charge Density Wave Systems
Submitted by Meng Tao (mengtao2@illinois.edu) on 2012-10-23T18:44:52Z No. of bitstreams: 1 Kidd_Timothy.pdf: 17087980 bytes, checksum: fe906676ec83edda201c0d424afa9f10 (MD5)
-
Photoemission Studies of *Interface Effects on Thin Film Properties
… temperatures of Pb films are measured with photoemission. The quantized electronic structure in Pb films causes the thermal stability to oscillate with an approximate bilayer period. A comparison among the systems reveals a phase reversal and an amplitude deviation in the stability …
-
Photoemission studies of interface effects on thin film properties
… are probed experimentally with angle-resolved photoemission spectroscopy using vacuum ultraviolet synchrotron radiation. An analysis of the measured quantum well energy levels and peak widths determines the height of the Schottky barrier, the rectifying energy barrier at a metal-semiconductor …
-
Angle-resolved photoemission studies of two-dimensional electron systems
… 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 support quantum …
-
Angle-resolved photoemission studies of thin-film topological materials
… 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 structure of Bi2Te3 …
-
Angle-resolved photoemission studies of topological thin films and superconducting heterostructures
… 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 (TIs) Bi2Te3 …
-
STM, LEED and photoemission studies of the Sn/Cu(100) surface alloys
… by McLoughlin et al. This thesis reviews these studies and completes them by analysing LEED images and integral order beam I(V) spectra obtained for the most recently reported phase. The surface structures of all five phases are studied using Scanning Tunnelling Microscopy (STM) and surface …
-
Photoemission Studies of the Electronic Structure and Properties of Thin Lead Films
The quantum well states experience different types of confinement depending on whether they are above or below the Si valence band edge. They show large oscillations in the thermal stability. Adding 1 ML to a film can make it stable to an additional 50°C. The effective masses of the subbands …
-
Core-Level Photoemission Studies of the Structure of Semiconductor Surfaces and Interfaces
… depth profile of the Si(111)/SiO2 interface, the photoemission intensity of the Si 2p core level from the Si(111)/SiO2 system has been measured as a function of photoelectron emission angle. The SiO2 layer is amorphous, and photoelectron diffraction techniques cannot be employed. A new approach …
-
Photoemission studies of surfaces and thin film systems of silver and gold
Angle-integrated photoemission spectroscopy was used to study the properties of Au 4f7; 2 core level in several systems: Au overlayers on Ag(lll), Au overlayers on Ag(lOO), and an Au monolayer buried in Ag(lll). Properties of a zone-center surface state were also investigated with the use of angle …
-
Scanning tunneling microscopy and photoemission studies of surface growth and defect formation
Made available in DSpace on 2011-05-07T14:05:58Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9512395.pdf: 7578890 bytes, checksum: 1e974a62019a1be35253bc1ad2741ff9 (MD5) Previous issue date: 1994
-
Angle-resolved photoemission studies of quantum-electronic coherence in metallic thin-film systems
… 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 quantized …
-
Angle-Resolved Photoemission Studies on the Many-Body Effects of High-Temperature Superconductor: Bi-2212
… 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 susceptibilities in the …
-
Collective excitations in layered materials with momentum-resolved electron energy loss spectroscopy
… quasiparticle kinks often seen in angle-resolved photoemission studies can be identified using M-EELS. Lastly, the observation of a novel electronic collective mode in TiSe2 is presented as strong evidence for an excitonic insulator phase in this compound.
Page 1 of 2