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200 papers

The predictions of hadronic interaction models for cosmic-ray induced air showers contain inherent uncertainties due to limitations of available accelerator data. This leads to differences in shower simulations using each of those models.…

High Energy Astrophysical Phenomena · Physics 2025-02-18 Benedetta Bruno , Rodrigo Guedes Lang , Luan Bonneau Arbeletche , Vitor de Souza , Stefan Funk

The elastic scattering, Stark transitions and Coulomb deexcitation of excited antiprotonic hydrogen atom in collisions with hydrogenic atom have been studied in the framework of the fully quantum-mechanical close-coupling method for the…

Nuclear Theory · Physics 2007-05-23 V. P. Popov , V. N. Pomerantsev

The electric conductance of Rh atomic contacts was investigated under the electrochemical potential control. The conductance histogram of Rh atomic contacts varied with the electrochemical potential. When the electrochemical potential of…

Mesoscale and Nanoscale Physics · Physics 2015-05-18 Tatsuya Konishi , Manabu Kiguchi , Kei Murakoshi

We analyze and compare the structural, dynamical, and electronic properties of liquid water next to prototypical metals including Pt, graphite, and graphene. Our results are built on Born-Oppenheimer molecular dynamics (BOMD) generated…

Materials Science · Physics 2017-08-09 Kevin Ryczko , Isaac Tamblyn

We report on the effects of electron collision and indirect ionization processes, occurring at photoexcitation and electron kinetic energies well below 30 eV on the photoemission spectra of liquid water. We show that the nascent…

A high-energy electron-positron collider has been widely recognized by the particle physics community to be the next crucial step for detailed studies of the Higgs boson and other fundamental particles and processes. Several proposals for…

Accelerator Physics · Physics 2024-06-18 Dimitrios Ntounis , Emilio Alessandro Nanni , Caterina Vernieri

We report the measurement of collision rate coefficient for collisions between ultracold Cs atoms and low energy Cs+ ions. The experiments are performed in a hybrid trap consisting of a magneto-optical trap (MOT) for Cs atoms and a Paul…

Atomic Physics · Physics 2020-08-20 Sourav Dutta , S. A. Rangwala

In order to interpret and predict the behavior and properties of fusion plasma, accurate cross sections for electronic processes in collisions between plasma impurities and atomic hydrogen are required. In this work, we investigate the…

Atomic Physics · Physics 2024-12-30 C. C. Jia , Y. Y. Qi , J. J. Niu , Y. Wu J. G. Wang , A. Dubois , N. Sisourat , J. W. Gao

We present a theoretical study of the transport characteristics of molecular junctions, where first-row diatomic molecules are attached to (001) gold and platinum electrodes. We find that the conductance of all of these junctions is of the…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 J. Ferrer , V. M. Garcia-Suarez

The role of the tip in inelastic electron tunneling spectroscopy (IETS) performed with scanning tunneling microscopes (STM) is theoretically addressed via first-principles simulations of vibrational spectra of single carbon monoxide (CO)…

Mesoscale and Nanoscale Physics · Physics 2011-04-12 Aran Garcia-Lekue , Daniel Sanchez-Portal , Andres Arnau , Thomas Frederiksen

We study in detail, by experimental measurements, atomistic simulations and DFT transport calculations, the process of formation and the resulting electronic properties of atomic-sized contacts made of Au, Ag and Cu. Our novel approaches to…

Mesoscale and Nanoscale Physics · Physics 2018-02-21 C. Sabater , W. Dednam , M. R. Calvo , M. A. Fern/'andez , C. Untiedt , M. J. Caturla

We develop a microscopic theory for the point-contact conductance between a metalic electrode and a strongly correlated material using the non-equilibrium Schwinger-Kadanoff-Baym-Keldysh formalism. We explicitly show that in the classical…

Strongly Correlated Electrons · Physics 2015-01-28 Wei-Cheng Lee , Wan Kyu Park , Hamood Z. Arham , Laura H. Greene , Philip W. Phillips

The fascinating electronic properties of the family of layered organic molecular crystals kappa-(BEDT-TTF)2X where X is an anion (e.g., X=I3, Cu[N(CN)2]Br, Cu(SCN)2) are reviewed. These materials are particularly interesting because of…

Strongly Correlated Electrons · Physics 2007-05-23 Ross H. McKenzie

Porous electrodes were developed using laser powder bed fusion of Inconel 718 lattice structures and electrodeposition of a porous nickel catalytic layer. Laser energy densities of ~83-333 J/m were used to fabricate ~500 um thick electrodes…

In this paper the interaction of hydrogen molecules with atomic-sized superconducting nanojunctions is studied. It is demonstrated by conductance histogram measurements that the superconductors niobium, tantalum and aluminum show a strong…

Mesoscale and Nanoscale Physics · Physics 2008-02-12 P. Makk , Sz. Csonka , A. Halbritter

The extremely narrow natural linewidths of rovibrational energy levels in the molecular hydrogen ion $\textrm{H}_2^{\,+}$, and the prospect of synthesising its antimatter counterpart $\overline{\textrm{H}}_2^{\,-}$, make it a promising…

Atomic Physics · Physics 2026-04-20 Graham M. Shore

We use Monte Carlo simulations to examine the simplest model of an ionic liquid, called the restricted primitive model, at a metal surface. We find that at moderately low temperatures the capacitance of the metal/ionic liquid interface is…

Chemical Physics · Physics 2010-11-19 M. S. Loth , Brian Skinner , B. I. Shklovskii

Understanding the local structure of water at the interfaces of metallic electrodes is a key problem in aqueous-based electrochemistry. Nevertheless, a realistic simulation of such setup is challenging, particularly when the electrodes are…

The controlled fabrication of well-ordered atomic-scale metallic contacts is of great interest: it is expected that the experimentally observed high percentage of point contacts with a conductance at non-integer multiples of the conductance…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 F. -Q. Xie , R. Maul , S. Brendelberger , Ch. Obermair , E. B. Starikov , W. Wenzel , G. Schoen , Th. Schimmel

Point contact spectroscopy on a H2O molecule bridging Pt electrodes reveals a clear crossover between enhancement and reduction of the conductance due to electron-vibration interaction. As single channel models predict such a crossover at…

Mesoscale and Nanoscale Physics · Physics 2008-05-23 O. Tal , M. Krieger , B. Leerink , J. M. van Ruitenbeek