742 research outputs found
Chemisorption on disordered binary alloys
No full textPT: J; CR: ANDERSON PW, 1961, PHYS REV, V124, P41 BANSIL A, 1983, PHYSICA SCRIPTA, V4, P52 BERK NF, 1975, SURF SCI, V48, P289 DESJONQUERES MC, 1977, J PHYS F, V7, P61 EHRENREICH H, 1976, SOLID STATE PHYS, V31, P150 FAULKNER JS, 1982, PROG MATER SCI, V27, P1 KELLEY MJ, 1981, PROG SURF SCI, V11, P139 MORANLOPEZ JL, 1975, J PHYS F MET PHYS, V5, P1277 MORANLOPEZ JL, 1976, SURF SCI, V57, P540 NEWNS DM, 1969, PHYS REV, V178, P1123 NORDLANDER P, 1984, SURF SCI, V136, P59 PARENT LG, 1980, PHYS LETT A, V78, P474 PARENT LG, 1982, PHYS REV B, V26, P753 PARENT LG, 1984, J ELECTROANAL CH INF, V163, P23 SACHTLER WMH, 1977, ADV CATAL, V26, P69 TOMANEK D, 1982, SURF SCI, V114, P11 UEBA H, 1979, J CHEM PHYS, V70, P1745 UEBA H, 1979, PHYS STATUS SOLIDI B, V92, P307 VANSANTEN RA, 1975, SURF SCI, V53, P35 VANSANTEN RA, 1977, SURF SCI, V63, P358 YONEZAWA F, 1982, STRUCTURE PROPERTIES, CH11; NR: 21; TC: 21; J9: PHYS REV B; PG: 7; GA: A0187Source type: Electronic(1
Identifying Redox Orbitals and Defects in Lithium-Ion Cathodes with Compton Scattering and Positron Annihilation Spectroscopies: A Review
No full textReduction-oxidation (redox) reactions that transfer conduction electrons from the anode to
the cathode are the fundamental processes responsible for generating power in Li-ion batteries. Electronic and microstructural features of the cathode material are controlled by the nature of the redox
orbitals and how they respond to Li intercalation. Thus, redox orbitals play a key role in performance
of the battery and its degradation with cycling. We unravel spectroscopic descriptors that can be used
to gain an atomic-scale handle on the redox mechanisms underlying Li-ion batteries. Our focus is on
X-ray Compton Scattering and Positron Annihilation spectroscopies and the related computational
approaches for the purpose of identifying orbitals involved in electrochemical transformations in the
cathode. This review provides insight into the workings of lithium-ion batteries and opens a pathway
for rational design of next-generation battery materials
Measurements of the Total and Differential Higgs Boson Production Cross Sections Combining the H→γγ and H→ZZ∗→4ℓ Decay Channels at s√=8 TeV with the ATLAS Detector
No full text6 pages plus author list + cover page + supplemental material (26 pages total), 7 figures, 23 tables, submitted to Physical Review Letters. All figures including auxiliary figures are available at this http URL - See paper for full list of authorsInternational audienceMeasurements of the total and differential cross sections of Higgs boson production are performed using 20.3 fb−1 of pp collisions produced by the Large Hadron Collider at a center-of-mass energy of s√=8 TeV and recorded by the ATLAS detector. Cross sections are obtained from measured H→γγ and H→ZZ∗→4ℓ event yields, which are combined accounting for detector efficiencies, fiducial acceptances and branching fractions. Differential cross sections are reported as a function of Higgs boson transverse momentum, Higgs boson rapidity, number of jets in the event, and transverse momentum of the leading jet. The total production cross section is determined to be σpp→H=33.0±5.3(stat)±1.6(sys)pb. The measurements are compared to state-of-the-art predictions
Search for Higgs bosons decaying to in the final state in collisions at 8 TeV with the ATLAS experiment
No full textSee paper for full list of authors – 11 pages plus author list + cover pages (24 pages total), 6 figures, 4 tables, submitted to Phys. Rev. D, All figures including auxillary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2014-02/International audienceA search for the decay to a pair of new particles of either the 125 GeV Higgs boson () or a second CP-even Higgs boson () is presented. The dataset correspods to an integrated luminosity of 20.3 fb of collisions at 8 TeV recorded by the ATLAS experiment at the LHC in 2012. The search was done in the context of the next-to-minimal supersymmetric standard model, in which the new particles are the lightest neutral pseudoscalar Higgs bosons (). One of the two bosons is required to decay to two muons while the other is required to decay to two -leptons. No significant excess is observed above the expected backgrounds in the dimuon invariant mass range from 3.7 GeV to 50 GeV. Upper limits are placed on the production of relative to the Standard Model production, assuming no coupling of the boson to quarks. The most stringent limit is placed at 3.5\% for 3.75 GeV. Upper limits are also placed on the production cross section of from 2.33 pb to 0.72 pb, for fixed = 5 GeV with ranging from 100 GeV to 500 GeV
Direct observation of localization of the minority-spin-band electrons in magnetite below the Verwey temperature
No full textTwo-dimensional spin-uncompensated momentum density distributions, ?s2D(p)s, were reconstructed in magnetite at 12 and 300 K from several measured directional magnetic Compton profiles. Mechanical detwinning was used to overcome severe twinning in the single-crystal sample below the Verwey transition. The reconstructed ?s2D(p) in the first Brillouin zone changes from being negative at 300 K to positive at 12 K. This result provides the first clear evidence that electrons with low momenta in the minority-spin bands in magnetite are localized below the Verwey transition temperature.Radiation, Radionuclides and ReactorsApplied Science
Search for a Charged Higgs Boson Produced in the Vector-boson Fusion Mode with Decay using Collisions at TeV with the ATLAS Experiment
No full textSee paper for full list of authors - 8 pages plus author list + cover pages (27 pages total), 3 figures, 9 tables, submitted to PRL, All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2014-13International audienceA search for a charged Higgs boson, , decaying to a boson and a boson is presented. The search is based on 20.3 fb of proton-proton collision data at a center-of-mass energy of 8 TeV recorded with the ATLAS detector at the LHC. The boson is assumed to be produced via vector-boson fusion and the decays and are considered. The search is performed in a range of charged Higgs boson masses from 200 to 1000 GeV. No evidence for the production of an boson is observed. Upper limits of 31-1020 fb at 95% CL are placed on the cross section for vector-boson fusion production of an boson times its branching fraction to . The limits are compared with predictions from the Georgi-Machacek Higgs Triplet Model
Angle-resolved photoemission spectra, electronic structure, and spin-dependent scattering in Ni1-xFex Permalloys
No full textElectronic structure and magnetism of Fe3-xVxX (X=Si, Ga, and Al) alloys by the KKR-CPA method
No full textOverview of results on diffraction from the ATLAS Experiment
No full textThe measurements of the total inelastic cross section and the differential inelastic cross section as a function of rapidity gap are presented as well as selected results for the measurement of the pseudorapidity dependence of the total transverse energy. The data used for these studies were collected in pp collisions at a center-of-mass energy of 7 TeV with the ATLAS detector at the LHC in 2010
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