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We report muon spin relaxation/rotation (uSR) measurements of single crystal Ba(Fe1-xCox)2As2 with x=0.038 and 0.047. Zero field (ZF)-uSR and Transverse field (TF)-iSR measurements of these underdoped samples find the presence of magnetism…

Superconductivity · Physics 2014-08-19 T. J. Williams , A. A. Aczel , S. L. Bud'ko , P. C. Canfield , J. P. Carlo , T. Goko , Y. J. Uemura , G. M. Luke

An improved quantum trajectory Monte Carlo method involving the Stark shift of the initial state, Coulomb potential, and multielectron polarization-induced dipole potential is used to revisit the origin of the low-energy interference…

Atomic Physics · Physics 2021-05-12 Weifeng Yang , Jie Li , Wenbin Jia , Hongdan Zhang , Xiwang Liu , Ming Zhu , Xiaohong Song , Jing Chen

We consider the effect of metal electrodes on the polarizability and nucleation of metal phases responsible for the operations of the emerging solid state memory. Our analysis is based on the image charge approach. We find results for point…

Mesoscale and Nanoscale Physics · Physics 2015-01-23 V. G. Karpov , R. E. E. Maltby , I. V. Karpov , E. Yalon

Here we report the structural, electrical and magnetic properties of Fe doped La0.7Ca0.3Mn1-xFexO3 with x = 0.0 to 1.0 prepared by conventional solid state reaction method. Simulated data on XRD shows an increase in volume with an increase…

Strongly Correlated Electrons · Physics 2012-01-23 Neeraj Kumar , H. Kishan , V. P. S. Awana

Electrically induced ionic motion offers a new way to realize voltage-controlled magnetism, opening the door to a new generation of logic, sensor, and data storage technologies. Here, we demonstrate an effective approach to…

Electron paramagnetic resonance (EPR) study of air-physisorbed defective carbon nano-onions evidences in favor of microwave assisted formation of weakly-bound paramagnetic complexes comprising negatively-charged O2- ions and edge carbon…

Mesoscale and Nanoscale Physics · Physics 2016-06-10 D. W. Boukhvalov , V. Yu. Osipov , A. I. Shames , K. Takai , T. Hayashi , T. Enoki

Magnetic excitations in a weakly coupled spin dimers and chains compound Cu2Fe2Ge4O13 are measured by inelastic neutron scattering. Both structure factors and dispersion of low energy excitations up to 10 meV energy transfer are well…

Strongly Correlated Electrons · Physics 2009-11-11 T. Masuda , A. Zheludev , B. Sales , S. Imai , K. Uchinokura , S. Park

The strange metal phase is characteristic for the $T$-linear dc resistivity behaviour over a large $T$-range. The effect of the strength of the charge-paramagnon interactions on the charge fluctuations in optimally doped and underdoped…

Strongly Correlated Electrons · Physics 2024-03-28 C. F. J. Flipse , T. J. N. van Stralen , D. M. Kepaptsoglou , Q. M. Ramasse

Emergency of superconductivity at the instabilities of antiferromagnetism (AFM), spin/charge density waves has been widely recognized in unconventional superconductors. In copper-oxide superconductors, spin fluctuations play a predominant…

Superconductivity · Physics 2015-10-27 Heshan Yu , Ge He , Ziquan Lin , Jie Yuan , Beiyi Zhu , Yi-feng Yang , Tao Xiang , Feo. V. Kusmartsev , Liang Li , Junfeng Wang , Kui Jin

We synthesized the pure and co-doped titanium dioxide (TiO$_2$) electrodes via spin coating. We examined the optical and electronic properties of as-prepared thin film electrodes with co-doping of transition metals and non-metals. The…

Applied Physics · Physics 2022-06-13 Manish K Vishwakarma , Monojit Bag , Puneet Jain

Doped lithium lanthanum zirconium oxide (LLZO) is a promising class of solid electrolytes for lithium-ion batteries due to their good electrochemical stability and compatibility with Li metal anodes. Ionic diffusivity in these ceramics is…

Materials Science · Physics 2023-05-16 Juan C. Verduzco , Ernesto E. Marinero , Alejandro Strachan

Structural, electronic and magnetic properties of polycrystalline La2-xCaxCoMnO6 (0 $\leq$ x $\leq$ 0.75) compounds are investigated by x-ray diffraction and magnetometry. All the samples have an orthorhombic structure and show a slight…

Materials Science · Physics 2022-05-11 J. R. Jesus , L. Bufaiçal , E. M. Bittar

Within the same failure mode, iron has the lowest ideal tensile strength among the transition metals crystallizing in the body-centered cubic structure. Here, we demonstrate that this anomalously low strength of Fe originates partly from…

Materials Science · Physics 2014-07-02 Xiaoqing Li , Stephan Schönecker , Jijun Zhao , Börje Johansson , Levente Vitos

Within the framework of the phenomenological Ginzburg-Landau theory influence of metallic electrodes on the properties of thin ferroelectric films is considered. The contribution of the metallic electrodes with different screening length of…

Materials Science · Physics 2016-08-31 M. D. Glinchuk , B. Y. Zaulychny , V. A. Stephanovich

The semi-inclusive deep inelastic scattering of electrons off a nucleus A with detection of a slow nucleus (A-1) in the ground or low excitation states, i.e. the process A(e,e'(A-1))X, can provide useful information on the origin of the EMC…

Nuclear Theory · Physics 2015-03-19 Claudio Ciofi Degli Atti , Leonid P. Kaptari , Chiara Benedetta Mezzetti

Discovering new electrodes for sodium-ion battery requires clear understanding of the material process during battery operation. Using first-principles calculations, we identify mechanisms of ionic diffusion and electronic transfer in newly…

Materials Science · Physics 2017-09-20 Chol-Jun Yu , Song-Hyok Choe , Gum-Chol Ri , Sung-Chol Kim , Hyok-Su Ryo , Yong-Jin Kim

The emission of $\nu\bar\nu$ pairs off electrons in a polarized ultra-intense electromagnetic (e.g.\ laser) wave field is analyzed. We elaborate on the significance of non-linear electrodynamics effects (i.e., multi-photon processes) and…

High Energy Physics - Phenomenology · Physics 2011-03-22 A. I. Titov , B. Kampfer , H. Takabe , A. Hosaka

Exchange bias effects linked to surface spin freezing (SSF) are commonly found in iron oxide nanoparticles, while signatures of SSF in low-field temperature-dependent magnetization curves have been much less frequently reported. Here, we…

Landau Fermi liquid theory, with its pivotal assertion that electrons in metals can be simply understood as independent particles with effective masses replacing the free electron mass, has been astonishingly successful. This is true…

Strongly Correlated Electrons · Physics 2008-10-16 N. Manyala , J. F. DiTusa , G. Aeppli , A. P. Ramirez

We studied the electric and magnetic behavior near the phase boundary between antiferromagnetic (AF) and superconducting (SC) phases for a prototype of high-T_c pnictides LaFeAsO_{1-x}F_{x} by using nuclear magnetic resonance, and found…

Superconductivity · Physics 2012-06-05 N. Fujiwara , T. Nakano , Y. Kamihara , H. Hosono