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Carbon's versatility allows it to form diverse structures with unique properties, driven by its moderate electronegativity, small ionic radius, and ability to adopt \textit{sp}, \textit{sp\textsuperscript{2}}, and…

The Neutron-star Interior Composition ExploreR (NICER) is collecting data to measure the radii of neutron stars by observing the pulsed emission from their surfaces. The primary targets are isolated, rotation-powered pulsars, in which the…

High Energy Astrophysical Phenomena · Physics 2019-02-27 Michi Baubock , Dimitrios Psaltis , Feryal Ozel

Single layer core/shell structures consisting of graphene as core and hexagonal boron nitride as shell are studied using first-principles plane wave method within density functional theory. Electronic energy level structure is analysed as a…

Mesoscale and Nanoscale Physics · Physics 2014-08-05 S. Cahangirov , S. Ciraci

Motivated by the report by Cottam et al. (2002) of iron resonance scattering lines in the spectra of thermonuclear bursts from EXO 0748-676, we have investigated the information about neutron star structure and the geometry of the emission…

Astrophysics · Physics 2009-11-10 Sudip Bhattacharyya , M. Coleman Miller , Frederick K. Lamb

Photoelectron spectroscopy (PES) and microscopy are highly demanded for exploring morphologically complex solid-gas and solid-liquid interfaces under realistic conditions, but the very small electron mean free path inside the dense media…

We herein estimate the effect of lattice defects on the line shape of electron paramagnetic resonance (EPR) signals from a single crystal of the S=10 single-molecule magnet Mn$_{12}$ with the external magnetic field along the crystal c…

Condensed Matter · Physics 2009-11-07 Kyungwha Park , N. S. Dalal , P. A. Rikvold

Triangulenes are prototypical examples of open-shell nanographenes. Their magnetic properties, arising from the presence of unpaired $\pi$ electrons, can be extensively tuned by modifying their size and shape or by introducing heteroatoms.…

The data collected by ATIC, CREAM and PAMELA all display remarkable cosmic-ray-nuclei spectrum hardening above the magnetic rigidity $\sim$ 240 GV. One natural speculation is that the primary electron spectrum also gets hardened (possibly…

High Energy Astrophysical Phenomena · Physics 2013-12-24 Lei Feng , Rui-Zhi Yang , Hao-Ning He , Tie-Kuang Dong , Yi-Zhong Fan , Jin Chang

We point out some advantages of making observations of extrasolar planets in linearly polarized (LP) light. Older cool stars have quite low levels (~ 10^-4 to 10^-5) of fractional LP, while extrasolar planets can have relatively high…

Astrophysics · Physics 2007-05-23 S. Saar , S. Seager

The stability of Ne@C$_{60}$ and He@C$_{60}$ is discussed in the context of a spherical model where the carbon atoms are smeared out into a uniform shell. The electronic properties of the sixty $\pi$ electrons together with those of the…

chem-ph · Physics 2008-02-03 Dennis P. Clougherty

\indent It is a generally accepted fact that the unique dielectric properties of relaxor ferroelectrics are related to the formation of polar nanoregion (PNRs). Less well recognized is the corollary that, because they are polar and…

Mesoscale and Nanoscale Physics · Physics 2018-10-31 Ling Cai , Radha Pattnaik , Joel Lundeen , Jean Toulouse

We propose two coupled electron-hole sheets of few-layer graphene as a new nanostructure to observe superfluidity at enhanced densities and enhanced transition temperatures. For ABC stacked few-layer graphene we show that the strongly…

Superconductivity · Physics 2014-12-10 M. Zarenia , A. Perali , D. Neilson , F. M. Peeters

In the years between 2000 and 2002 several pre-series and series modules of the ATLAS EM barrel and end-cap calorimeter were exposed to electron, photon and pion beams. The performance of the calorimeter with respect to its finely segmented…

Instrumentation and Detectors · Physics 2019-08-14 Roberto Sacco

Heat transport in the solar corona and wind is still a major unsolved astrophysical problem. Because of the key role played by electrons, the electron density and temperature(s) are important prerequisites for understanding these plasmas.…

The spatial confinement and the propagation length of surface waves in a single-layer two-dimensional atomic crystal are analysed in term of its surface susceptibility and its surface conductivity. Based on the values of these macroscopic…

Optics · Physics 2016-06-29 Michele Merano

The electronic structure of the poly-pyridine conjugated polymer has been investigated by resonant and nonresonant inelastic X-ray scattering and X-ray absorption spectroscopies using synchrotron radiation. The measurements were made for…

A 2.5-dimensional particle-in-cell code is used to investigate the propagation of a large-amplitude, superluminal, nearly transverse electromagnetic (TEM) wave in a relativistically streaming electron-positron plasma with and without a…

Astrophysics · Physics 2009-11-13 O. Skjaeraasen , A. Melatos , A. Spitkovsky

Radio and X-ray emission of AGN appears to be correlated. The details of the underlying physical processes, however, are still not fully understood, i.e., to what extent is the X-ray and radio emission originating from the same relativistic…

Cosmology and Nongalactic Astrophysics · Physics 2012-06-05 Jens Zuther , Sebastian Fischer , Andreas Eckart

New type of plasmonic nanoparticles - silver octopods that can be synthesized with a variety of shapes - have been demonstrated to show versatile optical response using the discrete dipole approximation. The octopods show a complex behavior…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 Ivan I. Naumov , Zhiyong Li , Alexander M. Bratkovsky

Using large-scale molecular dynamics simulations, we investigate the scaling of morphological and contact mechanics properties of Al and Cu nanoparticles (NPs) physisorbed on suspended graphene. The characteristic linear size of a NP ranges…

Mesoscale and Nanoscale Physics · Physics 2026-05-20 Mykola Prodanov , Oleksii Khomenko