On photoionization of the subvalent subshells of noble gas endohedral atomsWe demonstrate strong interference patterns in the photoionization cross-section of the subvalent subshells of noble gas (NG) endohedral atoms NG@F. This interference is a result of common action of…M. Ya. Amusia, A. S. Baltenkov, L. V. Chernysheva·Oct 24, 2007SaveLearn
On the photoionization of the outer electrons in noble gas endohedral atomsWe demonstrate the prominent modification of the outer shell photoionization cross-section in noble gas (NG) endohedral atoms NG@F under the action of the fullerene F electron shell. This shell leads…M. Ya. Amusia, A. S. Baltenkov, L. V. Chernysheva·Oct 21, 2007SaveLearn
Coupling of Surface and Volume Dipole Oscillations in C-60 MoleculesWe first give a short review of the ``local-current approximation'' (LCA), derived from a general variation principle, which serves as a semiclassical description of strongly collective…M. Brack, P. Winkler, M. V. N. Murthy·Oct 15, 2007SaveLearn
Tracing non-equilibrium plasma dynamics on the attosecond timescale in small clustersIt is shown that the energy absorption of a rare-gas cluster from a vacuum-ultraviolet (VUV) pulse can be traced with time-delayed extreme-ultraviolet (XUV) attosecond probe pulses by measuring the…Ulf Saalmann, Ionuţ Georgescu, Jan M. Rost·Oct 12, 2007SaveLearn
Luminescence evidence for bulk and surface excitons in free xenon clustersCathodoluminescence spectra of free xenon clusters produced by condensation of xenon-argon gas mixtures in supersonic jets expanding into vacuum were studied. By varying initial experimental…O. G. Danylchenko, Yu. S. Doronin, S. I. Kovalenko et al.·Oct 5, 2007SaveLearn
A diffusion Monte Carlo study of small para-Hydrogen clustersGround state energies and chemical potentials of parahydrogen clusters are calculated from 3 to 40 molecules using the diffusion Monte Carlo technique with two different pH2-pH2 interactions. This…R. Guardiola, J. Navarro·Sep 28, 2007SaveLearn
Existence of Unexcited and Excited Biexcitons in Molecular CrystalsThe theory of four-body systems is revisited. It is illustrated that the theory provides a rigorous proof for the formation of ground state (unexcited) biexcitons in molecular crystals. The…Mohamed Assad Abdel-Raouf·Sep 18, 2007SaveLearn
Density of states of helium dropletsAccurate analytical expressions for the state densities of liquid He-4 droplets are derived, incorporating the ripplon and phonon degrees of freedom. The microcanonical temperature and the ripplon…Klavs Hansen, Michael D. Johnson, Vitaly V. Kresin·Sep 13, 2007SaveLearn
Polarizability of molecular chains: does one need exact exchange?Standard density functional approximations greatly over-estimate the static polarizability of longchain polymers, but Hartree-Fock or exact exchange calculations do not. Simple self-interaction…C. D. Pemmaraju, S. Sanvito, K. Burke·Aug 21, 2007SaveLearn
Classical Trajectory Perspective on Double Ionization Dynamics of Diatomic Molecules Irradiated by Ultrashort Intense Laser PulsesIn the present paper, we develop a semiclassical quasi-static model accounting for molecular double ionization in an intense laser pulse. With this model, we achieve insight into the dynamics of two…Di-Fa Ye, Jing Chen, Jie Liu·Aug 16, 2007SaveLearn
Time-dependent density functional theory calculation of van der Waals coefficient of sodium clustersIn this paper we employ all-electron ab-initio time-dependent density functional theory based method to calculate the long range dipole-dipole dispersion coefficient (van der Waals…Arup Banerjee, Aparna Chakrabarti, Tapan K. Ghanty·Aug 2, 2007SaveLearn
Structure, bonding and magnetism in cobalt clustersThe structural, electronic and magnetic properties of Con clusters (n=2-20) have been investigated using density functional theory within the pseudopotential plane wave method. An unusual…S. Datta, M. Kabir, S. Ganguly et al.·Jul 25, 2007SaveLearn
Emergence of noncollinear magnetic ordering in small magnetic clusters: Mnn and As@MnnUsing first-principles density functional calculations, we have studied the magnetic ordering in pure Mnn (n=2-10, 13, 15, 19) and As@Mnn (n=1-10) clusters. Although, for both pure and…Mukul Kabir, D. G. Kanhere, Abhijit Mookerjee·Jul 25, 2007SaveLearn
Kilohertz laser ablation for doping helium nanodropletsA new setup for doping helium nanodroplets by means of laser ablation at kilohertz repetition rate is presented. The doping process is characterized and two distinct regimes of laser ablation are…M. Mudrich, B. Forkl, S. Mueller et al.·Jul 17, 2007SaveLearn
Ultracold scattering processes in three-atomic helium systemsWe review results on scattering observables for 4He--4He2 and 3He--4He2 collisions. We also study the effect of varying the coupling constant of the atom-atom interaction on the…Elena A. Kolganova, Alexander K. Motovilov, Werner Sandhas·Jul 15, 2007SaveLearn
Interplay of polarization geometry and rotational dynamics in high harmonic generation from coherently rotating linear moleculeRecent reports on intense-field pump-probe experiments for high harmonic generation from coherently rotating linear molecules, have revealed remarkable characteristic effects of the simultaneous…F. H. M. Faisal, A. Abdurrouf·Jul 15, 2007SaveLearn
Stability, Reactivity, and Aromaticity of Compounds of a Multivalent SuperatomIn this communication we analyze the stability, reactivity and possible aromatic behavior of two recently reported clusters (Reveles J. U.; Khanna S. N.; Roach P. J.; Castleman A. W. jr. Proc. Natl.…Pratim Kumar Chattaraj, Santanab Giri·Jul 3, 2007SaveLearn
Dynamical Screening of Atom Confined by Finite-Width FullereneThis is an investigation on the dynamical screening of an atom confined within a fullerene of finite width. The two surfaces of the fullerene lead to the presence of two surface plasmon eigenmodes.…S. Lo, A. V. Korol, A. V. Solov'yov·Jun 11, 2007SaveLearn
Global Potential Energy Minima of (H2O)n Clusters on GraphiteLikely candidates for the global potential energy minima of (H2O)n clusters with n≤21 on the (0001)-surface of graphite are found using basin-hopping global optimization. The potential…B. S. Gonzalez, J. Hernandez-Rojas, J. Breton et al.·Jun 8, 2007SaveLearn
Spin evolution of spin-1 Bose-Einstein condensatesAn analytical formula is obtained to describe the evolution of the average populations of spin components of spin-1 atomic gases. The formula is derived from the exact time-dependent solution of the…Ma Luo, Zhibing Li, Chengguang Bao·May 29, 2007SaveLearn
Resonant Feshbach scattering of fermions in one-dimensional optical latticesWe consider Feshbach scattering of fermions in a one-dimensional optical lattice. By formulating the scattering theory in the crystal momentum basis, one can exploit the lattice symmetry and…M. Grupp, R. Walser, W. P. Schleich et al.·May 25, 2007SaveLearn
Attosecond resolved charging of clustersAttosecond laser pulses open the door to resolve microscopic electron dynamics in time. Experiments performed include the decay of a core hole, the time-resolved measurement of photo ionization and…Ionut Georgescu, Ulf Saalmann, Jan M. Rost·May 23, 2007SaveLearn
Clusters under strong VUV pulses: A quantum-classical hybrid-description incorporating plasma effectsThe quantum-classical hybrid-description of rare-gas clusters interacting with intense light pulses which we have developed is described in detail. Much emphasis is put on the treatment of screening…Ionut Georgescu, Ulf Saalmann, Jan M. Rost·May 23, 2007SaveLearn
Liquid Drop Stability of a Superdeformed Prolate Semi-Spheroidal Atomic ClusterAnalytical relationships for the surface and curvature energies of oblate and prolate semi-spheroidal atomic clusters have been obtained. By modifying the cluster shape from a spheroid to a…D. N. Poenaru, R. A. Gherghescu, A. V. Solov'yov et al.·Apr 17, 2007SaveLearn
The electronic structures, the equilibrium geometries and finite temperature properties of Nan (n=39-55)Density-functional theory has been applied to investigate systematics of sodium clusters Nan in the size range of n= 39-55. A clear evolutionary trend in the growth of their ground-state geometries…Shahab Zorriasatein, Mal-Soon Lee, D. G. Kanhere·Apr 12, 2007SaveLearn