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Density functional calculations for prediction of ultra-thin film structure and properties
Most of the published theoretical and calculational effort on unsupported, ordered, ultra-thin films (``UTF``) in vacuo has focused on the thickest computationally feasible systems as models for surface properties of semi-infinite slabs. Crystalline periodic length scales in two cartesian dimensions combined with molecular- scale thickness in the third, however, make UTF`s strong candidates for the occurrence of quantum interference effects. Many UTF properties were predicted first from jellium slab models. A noteworthy prediction was that there would be large oscillations in the work function as a function of layer number. Extensive calculations on a variety of N-layers (N = 1,2,3... atomic planes) using all-electron, full-potential, local-spin-density approximation techniques show that the work function oscillation is weaker than expected but that there are significant layer-number dependences in the equilibrium lattice parameters, inter-planar spacings, electronic structure, density of states, and electronic stopping power. This paper reviews our own calculations as well as some others. Our objectives include the discernment of systematics within UTF`s, systematics in relationship to their counterpart crystals, relationship with surface properties, and appraisal of challenges to current models and methods.
Date:
September 1, 1995
Creator:
Trickey, S.B. & Boettger, J.C.
Object Type:
Article
System:
The UNT Digital Library
Venezuela: Issues in the 111th Congress
This report discusses U.S.-Venezuela relations, including an historical overview. It also discusses the current political conditions in Venezuela, and certain Venezuela-related concerns the 111th Congress faces, such as Venezuela's human rights situation and its deepening relations with Iran.
Date:
September 3, 2010
Creator:
Sullivan, Mark P.
Object Type:
Report
System:
The UNT Digital Library
Latin America: Terrorism Issues
This report discusses the issue in relation to the U.S. State Department's April 2009 Country Report on Terrorism; Colombian President Hugo Chávez's sympathies with terrorist groups and lack of cooperation on antiterrorism efforts; growing U.S. concern over activities of terrorist groups Hezbollah and Hamas in the tri-border area of Argentina, Brazil, and Paraguay; and various legislative initiatives related to Latin American terrorism issues being considered by the 112th Congress.
Date:
September 2, 2009
Creator:
Sullivan, Mark P.
Object Type:
Report
System:
The UNT Digital Library
Venezuela: Political Conditions and U.S. Policy
None
Date:
September 4, 2007
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The Bellaire & Southwestern Texan (Bellaire, Tex.), Vol. 18, No. 28, Ed. 1 Wednesday, September 15, 1971
Weekly newspaper from Bellaire, Texas that includes local, state, and national news along with advertising.
Date:
September 15, 1971
Creator:
Royal, B. E. & Cronin, Carolyn
Object Type:
Newspaper
System:
The Portal to Texas History
The Oklahoma Daily (Norman, Okla.), Vol. 96, No. 28, Ed. 1 Monday, September 27, 2010
Student newspaper of the University of Oklahoma in Norman, Oklahoma that includes national, local, and campus news along with advertising.
Date:
September 27, 2010
Creator:
Moriak, Meredith
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Chicano Times (San Antonio, Tex.), Vol. 6, No. 78, Ed. 1 Friday, September 26, 1975
Bi-weekly newspaper from San Antonio, Texas that includes news and information of interest to the Mexican American community along with advertising.
Date:
September 26, 1975
Creator:
Rodriguez, Jose Luis
Object Type:
Newspaper
System:
The Portal to Texas History
The Saint Jo Tribune. (Saint Jo, Tex.), Vol. 21, No. 44, Ed. 1 Friday, September 26, 1919
Weekly newspaper from Saint Jo, Texas that includes local, state, and national news along with advertising.
Date:
September 26, 1919
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Christian Chronicle (Abilene, Tex.), Vol. 21, No. 49, Ed. 1 Friday, September 18, 1964
Monthly newspaper from Abilene, Texas that includes news and information about the Churches of Christ with a focus on the Eastern Oklahoma region along with advertising.
Date:
September 18, 1964
Creator:
Nichols, James W. & Smith, Bill E.
Object Type:
Newspaper
System:
The Portal to Texas History
The Sealy News (Sealy, Tex.), Vol. 83, No. 26, Ed. 1 Thursday, September 23, 1971
Weekly newspaper from Sealy, Texas that includes local, state, and national news along with advertising.
Date:
September 23, 1971
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Oklahoma City Times (Oklahoma City, Okla.), Vol. 74, No. 172, Ed. 2 Wednesday, September 4, 1963
Daily newspaper from Oklahoma City, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 4, 1963
Creator:
Gaylord, E. K.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Brenham Banner-Press (Brenham, Tex.), Vol. 78, No. 193, Ed. 1 Thursday, September 30, 1943
Daily newspaper from Brenham, Texas that includes local, state, and national news along with advertising.
Date:
September 30, 1943
Creator:
Robertson, Ruby
Object Type:
Newspaper
System:
The Portal to Texas History
Garber-Billings News (Garber, Okla.), Vol. 86, No. 47, Ed. 1 Thursday, September 24, 1987
Weekly newspaper from Garber, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 24, 1987
Creator:
Fair, Laura L.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Defense Language Institute Foreign Language Center Briefing
Defense Language Institute Foreign Language Center Briefing
Date:
September 14, 2005
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
Defense Language Institute Foreign Language Center & Presidio of Monterey Bios and Brochures
Defense Language Institute Foreign Language Center & Presidio of Monterey Bios and Brochures
Date:
September 14, 2005
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
Holdenville Daily News (Holdenville, Okla.), Vol. 33, No. 254, Ed. 1 Monday, September 12, 1960
Daily newspaper from Holdenville, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 12, 1960
Creator:
Millirons, Don
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Orange Leader (Orange, Tex.), Vol. 60, No. 211, Ed. 1 Wednesday, September 4, 1963
Daily newspaper from Orange, Texas that includes local, state, and national news along with extensive advertising.
Date:
September 4, 1963
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Texas Jewish Post (Fort Worth, Tex.), Vol. 21, No. 38, Ed. 1 Thursday, September 21, 1967
Weekly Jewish newspaper from Fort Worth, Texas that includes local, state, and national news along with extensive advertising.
Date:
September 21, 1967
Creator:
Wisch, J. A.
Object Type:
Newspaper
System:
The Portal to Texas History
Sapulpa Herald (Sapulpa, Okla.), Vol. 5, No. 24, Ed. 1 Monday, September 30, 1918
Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 30, 1918
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
ILAS Newsletter, Volume 18, Number 1, September 1984
Newsletter of the Institute of Latin American Studies discussing activities and research at the Institute, news from Latin America, and other related topics of interest.
Date:
September 1984
Creator:
University of Texas at Austin. Institute of Latin American Studies.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Galveston Tribune. (Galveston, Tex.), Vol. 19, No. 267, Ed. 1 Thursday, September 28, 1899
Daily newspaper from Galveston, Texas that includes local, state, and national news along with advertising.
Date:
September 28, 1899
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Olney Enterprise. (Olney, Tex.), Vol. 10, No. 23, Ed. 1 Friday, September 26, 1919
Weekly newspaper from Olney, Texas that includes local, state, and national news along with advertising.
Date:
September 26, 1919
Creator:
Shuffler, R.
Object Type:
Newspaper
System:
The Portal to Texas History
Breckenridge American (Breckenridge, Tex.), Vol. 23, No. 100, Ed. 1 Tuesday, September 28, 1943
Daily newspaper (except Sunday) from Breckenridge, Texas that includes local, state and national news along with extensive advertising.
Date:
September 28, 1943
Creator:
Hall, C. M.
Object Type:
Newspaper
System:
The Portal to Texas History
Venezuela: Political Conditions and U.S. Policy
The Social Services Block Grant (SSBG) is a flexible source of funds that states may use to support a wide variety of social services activities. States have broad discretion over the use of these funds. This short report provides background information on the SSBG and tracks relevant legislation and appropriations measures.
Date:
September 23, 2005
Creator:
Gish, Melinda
Object Type:
Report
System:
The UNT Digital Library