Electronic Properties of Impurities, Surfaces, and Quantum Structures
Electronic Properties of Impurities, Surfaces, and Quantum Structures
批准号:
9975470
负责人:
Tai Chiang
金额:
$33.0万
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
1999
资助国家:
美国
项目状态:
已结题
起止时间:
1999-06-01 至 2003-06-30
中文摘要
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英文摘要
9975470ChiangThis project is a fundamental study of the electronic properties of selected metal systems using high-resolution angle-resolved photoemission spectroscopy. The goal is to understand the response to electromagnetic stimulation and the behavior of quasiparticles and collective excitations. Photoemission cross sections, lineshapes, and linewidths will be measured as a function of binding energy at precisely specified points in k space. Effects of impurity scattering, magnetic interaction, spatial coherence, phonon scattering, and quantum confinement will be examined. Systems of interest will include surfaces and bulk materials doped with magnetic and nonmagnetic impurities as well as films and multilayers designed for probing specific properties including the Fermi-liquid or non-Fermi-liquid behavior. We have demonstrated that atomically uniform films of silver can be prepared on iron single crystals. These films form an electron interferometer allowing highly accurate spectroscopic measurements. The underlying growth mechanism leading to the formation of such films will be investigated, and experiments will be carried out to explore the possibility of making uniform films of other materials. %%%Artificial structures involving thin layers and dopants can exhibit interesting and potentially useful electronic properties. Modern techniques allow layer configurations made with atomic precision. Electrons in such systems can become trapped, reflected, or scattered by the layer boundaries and dopants, resulting in new properties that offer opportunities for applications. This research project will focus on basic physics and chemistry issues of atomic layer formation and the relationship between atomic structure and electronic properties. Part of the work will be carried out at the Synchrotron Radiation Center, a national user facility funded by the National Science Foundation. This project will offer excellent opportunities for graduate student research and training.***
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Coupled Electronic and Lattice Structures in Thin Crystalline Films
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批准号:1709945
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项目类别:Continuing Grant
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资助金额:$64.64万
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财政年份:2017
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负责人:Tai Chiang
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依托单位:
Electronic and Atomistic Effects in Nanostructures
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批准号:1305583
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项目类别:Continuing Grant
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资助金额:$56.0万
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财政年份:2013
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负责人:Tai Chiang
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依托单位:
Electronic and Atomistic Effects in Nanostructures
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批准号:0906444
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项目类别:Continuing Grant
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资助金额:$50.0万
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财政年份:2009
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负责人:Tai Chiang
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依托单位:
Electronic and Atomistic Effects in Quantum Structures
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批准号:0503323
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项目类别:Continuing Grant
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资助金额:$0.0万
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财政年份:2005
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负责人:Tai Chiang
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依托单位:
Electronic Effects in Quantum Structures
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批准号:0203003
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项目类别:Continuing Grant
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资助金额:$33.0万
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财政年份:2002
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负责人:Tai Chiang
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依托单位:
Development of an Ultrahigh Resolution Photoemission System for Studies of Quantum Structures and Training of Students
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批准号:9975182
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项目类别:Standard Grant
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资助金额:$19.77万
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财政年份:1999
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负责人:Tai Chiang
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依托单位:
Acquisition and Development of a High-Resolution Photoelectron Analyzer for Studies of Surfaces, Films, and Multilayers of Metals, Semiconductors, & Magnetic Materi
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批准号:9531582
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项目类别:Continuing Grant
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资助金额:$15.36万
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财政年份:1996
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负责人:Tai Chiang
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依托单位:
Metallic and Magnetic Quantum Structures
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批准号:9531809
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项目类别:Continuing Grant
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资助金额:$27.0万
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财政年份:1996
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负责人:Tai Chiang
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依托单位:
Metal Surfaces, Quantum Wells, and Superlattices
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批准号:9223546
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项目类别:Continuing Grant
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资助金额:$28.5万
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财政年份:1993
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负责人:Tai Chiang
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依托单位:
Metal Surfaces, Interfaces, and Multilayer Structures
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批准号:8919056
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项目类别:Continuing Grant
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资助金额:$26.9万
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财政年份:1990
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负责人:Tai Chiang
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依托单位:
Metal Interfaces
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批准号:8614234
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项目类别:Continuing Grant
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资助金额:$25.8万
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财政年份:1987
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负责人:Tai Chiang
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依托单位:
Presidential Young Investigator Award
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批准号:8352083
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项目类别:Continuing Grant
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资助金额:$28.71万
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财政年份:1984
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负责人:Tai Chiang
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依托单位:
Metal Interfaces (Materials Research)
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批准号:8311281
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项目类别:Continuing Grant
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资助金额:$25.0万
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财政年份:1983
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负责人:Tai Chiang
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依托单位:
海外基金