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Énergie réticulaire

Publications associées (61)

Intrinsic defect complexes in CdTe and ZnTe

Radiation defects in CdTe and ZnTe are modeled from first principles. The most important intrinsic defects resulting from cation evaporation or displacement are cation vacancies and tellurium anti-sites, electrically active defects characterized by a low f ...

2011

Exciton Condensation Driving the Periodic Lattice Distortion of 1T-TiSe_{2}

Corsin Battaglia, Philipp Aebi

We address the lattice deformation of 1T-TiSe2 within the exciton condensate phase. We show that, at low temperature, condensed excitons influence the lattice through electron-phonon interaction. It is found that at zero temperature, in the exciton condens ...

2011

Polar lattice vibrations and phase transition dynamics in Pb(Zr1-xTix)O-3

Dragan Damjanovic, Li Jin

Infrared (IR) reflectivity spectra of nominally pure Pb(Zr1-xTix)O-3 ceramics with different Ti/Zr concentration (x = 0.42-0.58) were measured and evaluated, along with the time-domain terahertz transmittance spectra in the temperature range 10 K-900 K. Th ...

2011

First search for atmospheric and extraterrestrial neutrino-induced cascades with the IceCube detector

Matthias Wolf, Shirit Cohen, Mathieu Ribordy, Xiaoxia Bai

We report on the first search for atmospheric and for diffuse astrophysical neutrino-induced showers (cascades) in the IceCube detector using 257 days of data collected in the year 2007-2008 with 22 strings active. A total of 14 events with energies above ...

2011

Optical absorption of small copper clusters in neon: Cu-n, (n=1-9)

Wolfgang Harbich, Sylvain Lecoultre, Alexandre Rydlo

We present optical absorption spectra in the UV-visible range (1.6 eV < omega < 5.5 eV) of mass selected neutral copper clusters Cu-n(n = 1-9) embedded in a solid neon matrix at 7 K. The atom and the dimer have already been measured in neon ma ...

American Institute of Physics2011

Energy alignment and surface dipoles of rylene dyes adsorbed to TiO2 nanoparticles

Ulf Anders Hagfeldt

The energy loss in dye-sensitized solar cells calcd. from the energy difference between the lowest electronic transition of the dye and the obtained open-circuit voltage is often 1 eV or even more. To minimize this loss, it is important to accurately det. ...

2011

Electronic structure of single crystal UPd3, UGe2, and USb2 from hard X-ray and angle-resolved photoelectron spectroscopy

Marco Grioni, Luca Moreschini

Electronic structure of single crystal UPd3, UGe2, and USb2 has been measured from hard X-ray photoelectron spectroscopy (HAXPES) with 7.6 keV photons at the European Synchrotron Radiation Facility (ESRF). Lower photon energy angle-resolved photoelectron s ...

Elsevier2011

Cyclinac Medical Accelerators Using Pulsed C6+/H2+ Ion Sources

Adriano Garonna, Alberto Degiovanni

Charged particle therapy, or so-called hadrontherapy, is developing very rapidly. There is large pressure on the scientific community to deliver dedicated accelerators, providing the best possible treatment modalities at the lowest cost. In this context, t ...

2010

Cyclinac medical accelerators using pulsed C6+/H + 2 ion sources

Adriano Garonna, Alberto Degiovanni

2010

Li-related defects in ZnO : hybrid functional calculations

Nava Setter, Alfredo Pasquarello, Alexander Tagantsev, Audrius Alkauskas, Alexandra Sarabando de Carvalho

Hybrid density functional calculations are used to model substitutional lithium (LiZn) and interstitial lithium (Lii) defects in ZnO. The calculated transition levels and formation energies are compared to those obtained using a semilocal density functiona ...

2009

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