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In this study, a novel electric field compressor is proposed by doping a metal-air-metal pillar in epsilon-near-zero medium within a metallic waveguide, which effectively enhances the background electric fields in a sub-wavelength air…

Applied Physics · Physics 2024-05-28 Fei Sun , Jinyuan Shan , Yichao Liu

We pursue, in this contribution, an investigation of the contribution of the electron's magnetic dipole moment (MDM) to the electron's electric dipole moment (EDM) (or the charged leptons, more generally) in the framework of the Born-Infeld…

High Energy Physics - Phenomenology · Physics 2016-10-11 N. Panza , Y. M. P. Gomes , J. A. Helayël

The dependence of the superconducting gaps in epitaxial Ba(Fe_{1-x}Co_{x})_2As_2 thin films on the nominal doping x (0.04 \leq x \leq 0.15) was studied by means of point-contact Andreev-reflection spectroscopy. The normalized conductance…

Superconductivity · Physics 2013-12-10 P. Pecchio , D. Daghero , G. A. Ummarino , F. Kurth , B. Holzapfel , K. Iida , R. S. Gonnelli

Effective field theories (EFT) are strongly constrained by fundamental principles such as unitarity, locality, causality, and Lorentz invariance. In this paper, we consider the EFT of photons (or other $U(1)$ gauge field) and compare…

High Energy Physics - Theory · Physics 2023-07-12 Mariana Carrillo González , Claudia de Rham , Sumer Jaitly , Victor Pozsgay , Anna Tokareva

The recombination of charges is an important process in organic photonic devices because the process influences the device characteristics such as the driving voltage, efficiency and lifetime. By combining the dipole trap theory with the…

Materials Science · Physics 2017-08-04 Chang-Heon Lee , Jeong-Hwan Lee , Kwon-Hyeon Kim , Jang-Joo Kim

The weak-coupling quantum phase diagrams of the one-dimensional (1D) Holstein-Hubbard and Peierls-Hubbard models are computed near half-filling, using a multi-step renormalization group technique. If strong enough, the electron-phonon…

Superconductivity · Physics 2007-05-23 Ian P. Bindloss

We propose to use the near-threshold electron scattering data for atoms to guide the reliable experimental determination of their electron affinities (EAs), extracted using the Wigner Threshold Law, from laser photodetachment threshold…

Atomic Physics · Physics 2014-03-05 Zineb Felfli , Alfred Z. Msezane

In oxygen-doped Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$, the spectra, as observed by tunneling or photoemission spectroscopic measurements, depend on the sample fabrication conditions, such as the temperature and pressure for fabricating the…

Superconductivity · Physics 2026-02-20 Tatsuya Honma

We investigate the spectral properties of photonic crystals, lacking parity-time (PT) symmetry, using scattering matrix formalism. We show using the symmetry properties of matrices that a defective photonic crystal, doped with three-level…

Optics · Physics 2025-02-20 Nancy Ghangas , Shubhrangshu Dasgupta

We have studied metal/organic semiconductor charge injection in poly(3-hexylthiophene) (P3HT) field-effect transistors with Pt and Au electrodes as a function of annealing in vacuum. At low impurity dopant densities, Au/P3HT contact…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 B. H. Hamadani , H. Ding , Y. Hao , D. Natelson

Low temperature specific heat has been measured and extensively analyzed on a series of $La_{2-x}Sr_xCuO_4$ single crystals from underdoped to overdoped regime. From these data the quasiparticle density of states (DOS) in the mixed state is…

Strongly Correlated Electrons · Physics 2009-11-10 Hai-Hu Wen , Zhi-Yong Liu , Fang Zhou , Jiwu Xiong , Wenxing Ti , Tao Xiang , Seiki Komiya , Xuefeng Sun , Yoichi Ando

We study the strongly singular volume integral equation that describes the scattering of time-harmonic electromagnetic waves by a penetrable obstacle. We consider the case of a cylindrical obstacle and fields invariant along the axis of the…

Analysis of PDEs · Mathematics 2015-09-30 Martin Costabel , Eric Darrigrand , Hamdi Sakly

We study analytic spectral perturbation theory for the time-harmonic Maxwell operator in a perfectly electrically conducting cavity containing a high-contrast core--shell structure. The dielectric permittivity equals $1$ in a bounded…

Analysis of PDEs · Mathematics 2026-01-21 Robert V. Kohn , Raghavendra Venkatraman

Phosphorylation is one of the most important protein modifications, and electron-transfer dissociation tandem mass spectrometry (ETD-MS/MS) is a potentially useful method for the sequencing of phosphopeptides, including determination of the…

Chemical Physics · Physics 2018-11-27 Daiki Asakawa , Akio Miyazato , Frederic Rosu , Valérie Gabelica

In order to establish the doping dependence of the critical current properties in the iron-based superconductors, the in-plane critical current density (Jc) of BaFe2As2-based superconductors, Ba1-xKxFe2As2 (K-Ba122), Ba(Fe1-xCox)2As2…

We consider the elastic scattering of electrons by hydrogen atoms in the presence of a two-color circularly polarized laser field in the domain of moderate intensities below $10^{13}$ W/cm$^2$ and high projectile energies. A hybrid approach…

Atomic Physics · Physics 2023-06-16 Gabriela Buica

Mixed solid compounds are employed in a vast array of applications so an accurate determination of their chemical compositions is of crucial importance. All current characterization methods require specially-treated samples so the…

Materials Science · Physics 2024-04-03 Miao Miao Zhao , Yang Yang , Na Du , Yu Ying Zhu , Peng Ren , Fei Yen

We study certain "geometric-invariant resonant cavitie"' introduced by Liberal et. al in a 2016 Nature Comm. paper, modeled using the transverse magnetic reduction of Maxwell's equations. The cross-section consists of a dielectric inclusion…

Analysis of PDEs · Mathematics 2024-06-25 Robert V. Kohn , Raghavendra Venkatraman

A recent analysis of pion photo-production multipoles using p(g,pi0) data from Mainz is repeated, successively adding constraints from other observables and varying the number of fitted partial waves. The original analysis is shown to have…

Nuclear Theory · Physics 2008-02-03 A. M. Sandorfi , J. Tonnison , S. Hoblit

The formation of the magnetic moment in C- and N-doped MgO is the result of a delicate interplay between Hund's coupling, hybridization and Jahn-Teller distortion. The balance depends on a number of environmental variables including…

Materials Science · Physics 2015-05-13 Andrea Droghetti , Stefano Sanvito