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	Principles - Some semiconductor physics - Band structure
		The next higher band is the conduction band which is separated from the valence band by the energy gap, or bandgap.
		Four of the five outer electrons are used to fill the valence band and the one extra electron from each impurity atom is therefore promoted to the conduction band.
		The electrons in the conduction band are mobile, and the crystal becomes a conductor.
	www.soton.ac.uk /~solar/intro/tech3.htm (504 words)

	PROFESSOR AN-BAN CHEN's PUBLICATION LIST (Site not responding. Last check: 2007-10-18)
		Electronic Structure of Pseudo-Binary Semiconductor Alloys Al(x)Ga(1-x) As, GaP(x)As(1-x) and Ga(x)In(1-x)P, Phys.
		Band Structures of HgCdTe and HgZnTe Alloys and Superlattices, Semicond.
		Electronic Band Structures of SiC Calculated from A Hybrid Pseudopotential and Tight-Binding Model, in "Amorphous and Crystalline Silicon Carbide IV", edited by Yang, Rahman and Harris, P. 170, (Spring-Verlag, 1992), P. Srichaikul, A.-B. Chen and J. Choyke.
	www.physics.auburn.edu /~abchen/publication.html (2100 words)

	Electronic band structure - Wikipedia, the free encyclopedia
		The uppermost occupied band in an insulator or semiconductor is called the valence band by analogy to the valence electrons of individual atoms.
		Because one of the main mechanisms for electrons to be excited to the conduction band is due to thermal energy, the conductivity of semiconductors is strongly dependent on the temperature of the material.
		This band gap is one of the most useful aspects of the band structure, as it strongly influences the electrical and optical properties of the material.
	en.wikipedia.org /wiki/Electronic_band_structure (1390 words)

	Welcome to Jingsong's Homepage (Site not responding. Last check: 2007-10-18)
		Band dispersion is especially important in the sense that it is related to charge carrier mobility, and so electronic conduction property of the material.
		The band electronic structure at 173 K and 100 K indicate that with the increasing of temperature, the band gap changes from 0.12 eV to 0.23 eV.
		The 100 K band gap is the regular insulator band gap, and the 173 K band gap is an electron correlation induced gap.
	www.georgetown.edu /users/huangj2/our_work.html (595 words)

	Band Structure Diagrams
		Furthermore, just as the energy levels in a MO diagram are dependent upon the energy levels of the atomic orbitals as well as the symmetry and interatomic distances in a molecule, the electronic band structure is dependent upon energy levels of the constituent atomic orbitals and the crystal structure.
		In summary remember that the band positions are determined by the energies of the atomic orbitals and the overlap of orbitals within a molecule.
		The width of the bands is determined by the overlap of orbitals with neighboring molecules (intermolecular overlap).
	www.chemistry.ohio-state.edu /~woodward/ch754/bandstr.htm (1610 words)

	A New Gap-Opening Mechanism in a Triple-Band Metal
		As it happens, electronic structure is intimately tied to the atomic structure (where the atoms are).
		Of three bands in the metal, one disappears after donating its electrons to a second in which a gap opens up, while the third opens a band-gap in the normal way.
		Bands are indicated by bright regions of higher photoemission intensity.
	www-als.lbl.gov /als/science/sci_archive/93indium.html (995 words)

	Structure and Electronic Properties of Carbon Nanotubes
		First, the unique relationship between SWNT atomic structure and electronic properties, and the richness of structures observed in both purified and chemically etched nanotube samples are discussed.
		Electronic band structure calculations predict that the (n,m) indices determine whether a SWNT will be a metal or a semiconductor.
		The rounded structure suggests strongly that the end is closed, although the atomic structure cannot be obtained since the tube axis is parallel to the image plane.
	www.pubs.acs.org /cgi-bin/jtextd?jpcbfk/104/13/html/jp993592k.html (10349 words)

	Electronic Band Structure (Site not responding. Last check: 2007-10-18)
		Band structures can then readily be constructed by varying the wave-vector k over the range 0-0.5.
		The band structure is then constructed by simply joining the points in the order in which they are generated.
		Within band structures, bands of different symmetry are allowed to cross.
	www.cachesoftware.com /mopac/Mopac2002manual/node556.html (239 words)

	Electronic Structure (Site not responding. Last check: 2007-10-18)
		The band gap of silicon nitride is seen at ~6 eV while into the silicate intergranular film (at approx.
		Optical property based electronic structure studies emphasize the interatomic bonding and interband transitions of materials, elucidating their physical properties.
		The scope of these quantitative electronic structure tools presents new opportunities for the field of materials science.
	www.lrsm.upenn.edu /~frenchrh/electronic_structure.htm (327 words)

	Band Structures (Site not responding. Last check: 2007-10-18)
		The band structures of silicon in the diamond, BC8 and ST12 structures are shown in Figures 4.26, 4.27 and 4.28.
		The calculations predict a semiconducting structure with a band gap of 0.59eV.
		The calculations predict a semiconducting structure with a band gap of 0.7eV.
	cmt.dur.ac.uk /sjc/thesis/thesis/node39.html (548 words)

	ElectronicStructure.org
		TBPW is an electronic structure code for tight binding (TB) and plane wave (PW) calculations.
		It is primarily intended for pedagogical purposes; written from the ground-up in a modular style using Fortran 90 with parts common to all band structure codes in modules in a common directory.
		The interaction between ions and electrons is described using ultrasoft Vanderbilt pseudopotentials (US-PP) or the projector augmented wave method (PAW), especially useful for transition metals and first row elements.
	electronicstructure.org /book.asp (1643 words)

	Statistical Physics and Low Dimensional Systems (via CobWeb/3.1 planetlab2.isi.jhu.edu) (Site not responding. Last check: 2007-10-18)
		The morphology and electronic properties of the interfaces are radically different for a full monolayer, which exhibits a close-packed structure and a moiré modulation of the atomic positions.
		In this respect we are interested in the local modification of the electronic structure of CNT by mono-atomic defects and the possibility to control transport properties via such defects.
		I shall firstly show that it is possible to recover the band structure of this material by studying the evolution with bias of the standing wave patterns due to confinement or to quantum interference effects.
	www.lpm.u-nancy.fr.cob-web.org:8888 /StatPhysLowDimSyst (9501 words)

	1.2 Molecular Aspects of Solid C60 Compounds
		The simplest model of the band structure of the alkali-fullerides is the ``rigid band'' picture.
		This brings us to another general aspect of the electronic structure of metallic molecular solids, that is, their tendency to undergo metal-insulator transitions which compete with the superconducting transition.
		When the kinetic term dominates, the band (or Fermi liquid theory) description of the conduction electrons is valid, but if the Coulomb repulsion is sufficiently strong, the electrons may become localized, and form a Mott-Hubbard insulator.
	musr.physics.ubc.ca /theses/MacFarlane/node6.html (1095 words)

	physics - Electronic band structure (via CobWeb/3.1 planetlab2.isi.jhu.edu) (Site not responding. Last check: 2007-10-18)
		In solid state physics, the electronic band structure, or simply band structure, refers to the dispersion relation (the relation between energy versus momentum) of electrons in a crystal.
		According to Bloch's Theorem, electrons in a periodic potential have wavefunctions and energies which are periodic in wavevector up to a reciprocal lattice vector.
		Calculating band structures from first principles is a topic in theoretical solid state physics.
	www.physicsdaily.com.cob-web.org:8888 /physics/Electronic_band_structure (149 words)

	Geometry Specification for Band Structure Calculations (Site not responding. Last check: 2007-10-18)
		Before electronic band structure calculations can be done, the sequence of atoms in the polymer must be supplied in a highly specific order.
		For band structures at least two unit cells must be defined.
		When band structures are to be calculated, the order of atoms is important.
	www.cachesoftware.com /mopac/Mopac2002manual/node555.html (182 words)

	Home
		Electronic band structure study of phosphosilicides PtSi3P2 and NiSi2P3", Inorg.
		K.-S. Lee, H.-J. Koo, J. Ren and M.-H. Whangbo, "Calculations and analysis of the electronic structures of transition metal phosphosilicides CuSiP8, IrSi3P3, CoSi3P3, and FeSi4P4", J.
		Jung, H.-J. Koo and M.-H. Whangbo, “Study of the 18-electron band gap and ferromagnetism in semi-Heusler compounds by non-spin-polarized electronic band structure calculations”, J.
	www.primec.com /books/papers.htm (1415 words)

	Available Electronic Structure Codes (Site not responding. Last check: 2007-10-18)
		Siesta (Spanish Initiative for Electronic Simulations with Thousands of Atoms) is both a method and its computer program implementation, to perform electronic structure calculations and ab initio molecular dynamics simulations of molecules and solids.
		LSMS is used to perform fundamental studies of the atomistic, electronic, and magnetic microstructure of metals and semiconductors.
		BAND, which is part of the Amsterdam Density Functional (ADF) package, is a full-potential LCAO DFT code for general periodicity: molecules, linear chains, surfaces, and solids.
	psi-k.dl.ac.uk /data/codes.html (2665 words)

	M. -H. Whangbo
		In Understanding the transport and other physical properties of low-dimensional metallic compounds, it is essential to know how their electronic structures are related to their crystal structures.
		To help uncover the structure-property relationships governing these compounds, the calculated electronic structures of these compounds are analyzed from the viewpoint of chemical concepts such as orbitalinteraction, overlap and symmetry.
		In addition, the trends in the spin exchange parameters of magnetic solids are explained on the basis of semi-empirical electronic structure calculations.
	www.ncsu.edu /chemistry/mwh.html (729 words)

	[No title]
		Electronic structure of PbS(111) twin boundaries and twinning superlattices
		Atomic geometry and electronic structure of a monolayer of Sb on (110) GaAs and InP
		Electronic structure of a neutral phosphorus vacancy in GaP and InP
	newton.ex.ac.uk /research/qsystems/gps/papers/bydate.html (1805 words)

	Lab on Band Structure Calculations with TBPW - June, 2005
		The fundamental band gap for both Si and GaAs is the smallest energy difference between the lowest empty band (#5) and the highest filled band (#4).
		The change in electronic bands with strain and atomic displacements are examples of "deformation potentials" and "electron-phonon interactions" to linear order in the strain of displacement.
		The analytic equation for the bands is given in Martin, Eqs.
	www.electronicstructure.org /ss2005/lab.html (1696 words)

	Teaching (Site not responding. Last check: 2007-10-18)
		Structure and Properties of Electronic and Photonic Materials
		The electronic and optical properties of metals, semiconductors, and insulators.
		This course explores the interplay between the electronic, magnetic, and photonic properties of advanced engineering materials in relation to processing, fabrication, and nanostructure.
	maeweb.ucsd.edu /~pbandaru/Teaching.htm (321 words)

	CSE - SIC-LMTO - Benchmarking an Electronic Structure Code
		Many of the interesting physical properties of materials are governed by the arrangement of electrons in the atoms of which they are composed.
		The computational solution of the underlying equations, the many-body Schrodinger equation for the electrons, is formidable, but computational and theoretical advances have made feasible the use of better and better approximations.
		Initially a guess is made at an electron density, the eigenproblem is solved and a new electron density generated.
	www.cse.clrc.ac.uk /arc/sic-lmto.shtml (737 words)

	Session N31 - Electronic Band Structure. (via CobWeb/3.1 planetlab2.isi.jhu.edu) (Site not responding. Last check: 2007-10-18)
		The procedure is applied to the conduction bands of a semiconductor and to the d bands of a transition metal.
		Using the three-center nonorthogonal parameters of Ref.[1], we calculate the electronic band structure and density of states, including spin-orbit effects, of the monoatomic BCC materials Ta and W, as well as the FCC materials Au and Pb.
		We have used this Hamiltonian to determine the stable structure of a Si_71 cluster and the reconstruction of a Si(100) surface.
	flux.aps.org.cob-web.org:8888 /meetings/YR01/MAR01/abs/S5310.html (2242 words)

	Physics Seminar (Site not responding. Last check: 2007-10-18)
		A carbon nanotube has a built-in band gap determined by the diameter and the chirality of the carbon lattice.
		We have investigated how this electronic band structure can be tuned, both with mechanical strain and magnetic field.
		I will discuss the experimental techniques of atomic force microscopy and low temperature transport measurements which were used to tune and measure individual nanotubes, and discuss the fundamental differences between changes in band structure caused by mechanical strain and axial magnetic field.
	www.physics.oregonstate.edu /~jansenh/Minot.html (120 words)

	Electronic Band Structure (via CobWeb/3.1 planetlab2.isi.jhu.edu) (Site not responding. Last check: 2007-10-18)
		The electronic band structure of GaAs in the SC16 structure along several lines of high symmetry is shown in Figure 4.33.
		The electronic structure of SC16 GaAs has been published previously[66] but these were calculations based on empirical pseudopotentials where the experimental band gap of the zincblende structure is one of the fitted parameters.
		However, as is evident from inspection of the band structure, the valence and conduction bands touch at the
	cmt.dur.ac.uk.cob-web.org:8888 /sjc/thesis/thesis/node48.html (190 words)

	Ab-initio electronic band structure of Sn doped In_2O_3^. (via CobWeb/3.1 planetlab2.isi.jhu.edu) (Site not responding. Last check: 2007-10-18)*
		Ab-initio electronic band structure of Sn doped In_2O_3^*.
		We present results of ab-initio calculations of the electronic structure for the full 40 atoms/cell strucutre of the ITO parent compound, In_2O_3, doped with Sn, performed using FLMTO and LMTO-ASA methods.
		Our results show the existence of a direct band gap of about 1 eV with the main contribution to the top of the valence band coming from O-2p states hybridized with In-5d, while the bottom of the conduction band is mainly formed from In-5s hybridized with O-2s states.
	flux.aps.org.cob-web.org:8888 /meetings/YR98/BAPSMAR98/abs/S4110012.html (256 words)

	NCMN Peter Dowben (Site not responding. Last check: 2007-10-18)
		A large effort is directed toward the study of the ferroelectric transition and ferromagnetic transition in thin films and overlayers and relating these phase transitions to changes in metallicity and electronic band structure.
		Strong emphasis is placed on understanding surface and interface electronic structure and related magnetic and ferroelectric properties.
		The experimental emphasis is on electron spectroscopies including angle-resolved photoemission, angle-resolved inverse photoemission, spin polarized inverse photoemission and spin polarized electron energy loss spectroscopy.
	www.unl.edu /ncmn/faculty/dowben.html (331 words)

	Kovar/Hall (Site not responding. Last check: 2007-10-18)
		My careful theoretical modeling and painstaking experimentation reveal 1) that my equipment is crap, as are all the available texts on the subject and 2) that this whole exercise was a complete waste of my time.
		Electrons in germanium are confined to well-defined energy bands that are separated by "forbidden regions" of zero charge-carrier density.
		The upshot is that if you heat up a sample of germanium, electrons will jump from a non-conductive energy band to a conductive one, thereby creating a measurable change in resistivity.
	www.cs.wisc.edu /~kovar/hall.html (529 words)

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