Browsing by Subject "Electrons"
Now showing items 1-20 of 31
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Article
Chiral control of current transfer in molecules
(2011)Electron transmission through chiral molecules induced by circularly polarized light can be very different for mirror image structures. This behavior is described in terms of current transfer: the transfer of both charge ...
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Article
Direct measurement of the W Boson width in pp̄ collisions at √s = 1.8 TeV
(2000)The W boson width, ΓW obtained in studies of the transverse-mass spectra of leptonic W decays is measured. Through analysis, the W width is determined from a binned log-likelihood fit to the transverse-mass distribution ...
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Article
Electron spin filtering in ferromagnet/semiconductor heterostructures
(2003)Circularly polarized light was used to generate spin-polarized electrons at room temperature in ferromagnet (FM)/GaAs Schottky diode structures. A change in the helicity-dependent photocurrent was obtained when the ...
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Article
First measurement of the ratio of central-electron to forward-electron W partial cross sections in pp̄ collisions at s=1.96TeV
(2007)We present a measurement of σ(pp̄→W)×B(W→eν) at s=1.96TeV, using electrons identified in the forward region (1.2<|η|<2.8) of the CDF II detector, in 223pb-1 of data. We measure σ×B=2796±13(stat)-90+95(syst)±162(lum)pb. ...
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Article
First measurements of inclusive W and Z cross sections from run II of the fermilab tevatron collider
(2005)We report the first measurements of inclusive W and Z cross sections times leptonic branching ratios for pp collisions at √s = 1.96 TeV, based on their decays to electrons and muons. The data correspond to an integrated ...
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Article
Floquet analysis for vibronically modulated electron tunneling
(2011)Electron tunneling provides the primary reaction channel for electron transfer (ET) in many molecular systems. The analysis of such systems therefore requires the consideration of electronic coherence and interference ...
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Article
Fragment orbital based description of charge transfer in peptides including backbone orbitals
(2014)Charge transfer in peptides and proteins can occur on different pathways, depending on the energetic landscape as well as the coupling between the involved orbitals. Since details of the mechanism and pathways are difficult ...
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Conference Object
Highly efficient spin filtering of ballistic electrons in hybrid spin valve/semiconductor structures
(2004)The highly efficient spin filtering of ballistic electrons in hybrid spin valve/semiconductor (SC) structures was discussed. It was found that the photocurrent was dependent on the relative alignment of the light helicity ...
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Article
Inclusive search for anomalous production of high-pT like-sign lepton pairs in pp̄ collisions at √s = 1.8 TeV
(2004)A search for anomalous production of events with at least two charged, isolated, like-sign leptons was discussed. A signal region, which contains low background from standard model (SM) processes, was defined. The final ...
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Article
Large positive magnetoresistance in nonstoichiometric NiMnSb thin films on silicon
(2004)The transport properties of pulsed-laser-deposited NiMnSb films on silicon as a function of film thickness were discussed. It was found that a low-temperature upturn was observed in the resistivity for film thicknesses of ...
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Article
Numerical calculation model for spin-dependent transport of photoexcited electrons across Fe/GaAs(0 0 1) interfaces
(2010)abs Spin-dependent transport of photogenerated electrons across Fe/GaAs(0 0 1) interfaces is calculated using a one-dimensional electron transport model. Creation of spin-polarized electrons by photoexcitation in this model ...
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Article
Observation of exclusive electron-positron production in hadron-hadron collisions
(2007)We present the first observation of exclusive e+e- production in hadron-hadron collisions, using pp̄ collision data at s=1.96TeV taken by the run II Collider Detector at Fermilab, and corresponding to an integrated luminosity ...
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Article
Optical spin injection in CuGaSe2/GaAs films
(2006)We have investigated polarization-resolved photoluminescence in epitaxially grown CuGaSe2/GaAs(001) films. Spin-polarized excitons are optically excited both below and above the characteristic crystal field splitting of ...
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Article
Persistence of structure over fluctuations in biological electron-transfer reactions
(2008)In the soft-wet environment of biomolecular electron transfer, it is possible that structural fluctuations could wash out medium-specific electronic effects on electron tunneling rates. We show that beyond a transition ...
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Article
Photoselected electron transfer pathways in DNA photolyase
(2007)Cyclobutane dimer photolyases are proteins that bind to UV-damaged DNA containing cyclobutane pyrimidine dimer lesions. They repair these lesions by photo-induced electron transfer. The electron donor cofactor of a photolyase ...
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Article
Physical constraints on charge transport through bacterial nanowires
(2012)Extracellular appendages of the dissimilatory metal-reducing bacterium Shewanella oneidensis MR-1 were recently shown to sustain currents of 10 10 electrons per second over distances of 0.5 microns [El-Naggar et al., Proc. ...
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Article
Reaction of tetracyanoethylene with SCl1
(2000)The chloride ion catalysed addition of SCl2 to TCNE gives the 4-dicyanomethylene-l,2,6-thiadiazine 2 (60%) with two minor products (5%) of extensive molecular rearrangement, the pyrimidine 4 and the pyrroloimidazothiadiazine ...
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Article
Reduction of spin injection efficiency by interface defect spin scattering in ZnMnSe/AlGaAs-GaAs spin-polarized light-emitting diodes
(2002)The effects of the interface microstructure on spin-injection efficiency in Zn1-xMnxSe/AlyGa1-yAs-GaAs spin-polarized light-emitting diodes (spin-LEDs) were studied. It was shown that the quantum well (QW) spin polarization ...
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Article
Review: Probing protein electron transfer mechanisms from the molecular to the cellular length scales
(2013)The mechanisms of bridge-mediated electron transfer (ET) reactions vary from coherent deep tunneling to thermally activated hopping. This short review focuses on some developments in the study of protein ET mechanisms at ...
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Article
Search for associated production of Y and vector boson in pp̄ Collisions at √s = 1.8 TeV
(2003)Associated production of υ and vector boson in pp̄ collisions at √s = 1.8 TeV were investigated. The CDF detector was used in the analysis. The analysis showed that υ(1S) mesons in association with W± or Z0 bosons were not ...