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We first report a novel phenomenon that manifests itself in a colossal difference in soft x-ray reflectivity from ferromagnetic transition-metal films between the left- and right-handed circular polarization (LCP and RCP) modes at a…

其他凝聚态物理 · 物理学 2010-02-03 Dae-Eun Jeong , Sang-Koog Kim

Parity-violating polarized electron scattering from nucleons and nuclei provides an excellent tool to extract valuable information on nuclear and nucleon structure, as well as to determine Standard Model couplings and higher-order radiative…

核理论 · 物理学 2015-04-15 O. Moreno , T. W. Donnelly , R. González-Jiménez , J. A. Caballero

The radiation emission spectra of polarized photons emitted from charged particles in single oriented crystals are obtained in Bayer-Katkov quasiclassical approach. The results of numerical calculations are presented in the region of small…

高能物理 - 唯象学 · 物理学 2009-10-31 S. M. Darbinyan , N. L. Ter-Isaakyan

The problem of electron resonant and non-resonant scatterings on two magnetized barriers is studied in the one-dimension. The transfer-matrix is built up to exactly calculate the coefficient of the electron transmittance through the system…

介观与纳米尺度物理 · 物理学 2015-05-19 Armen N. Kocharian , Avag S. Sahakyan , Ruzan M. Movsesyan

The investigation of polarized light of protoplanetary disks is key for constraining the dust properties, disk morphology and embedded magnetic fields. However, different polarization mechanisms and the diversity of dust grain shapes and…

太阳与恒星天体物理 · 物理学 2019-07-17 Robert Brunngräber , Sebastian Wolf

Single crystal inelastic neutron scattering is used to study spin wave excitations in the fully polarized state of the frustrated quantum ferro-antiferromagnet BaCdVO(PO$_4$)$_2$. The data analysis is based on a Heisenberg spin Hamiltonian…

强关联电子 · 物理学 2021-04-07 V. K. Bhartiya , S. Hayashida , K. Yu. Povarov , Z. Yan , Y. Qiu , S. Raymond , A. Zheludev

We report a neutron scattering study of the metallic triangular lattice antiferromagnet PdCrO$_2$. Powder neutron diffraction measurements confirm that the crystalline space group symmetry remains $R\bar{3}m$ below $T_N$. This implies that…

We study the properties of polarized radiation in turbulent magnetic fields from X-ray binary jets. These turbulent magnetic fields are composed of large- and small-scale configurations, which result in the polarized jitter radiation when…

高能天体物理现象 · 物理学 2017-02-15 Jian-Fu Zhang , Fu-Yuan Xiang , Ju-Fu Lu

Polarized neutron diffraction allows to determine the local susceptibility tensor on the magnetic site both in single crystals and powders. It is widely used in the studies of single crystals, but it is still hardly applicable to a number…

材料科学 · 物理学 2019-11-20 Iurii Kibalin , Arsen Gukasov

We present single-crystal neutron-diffuse-scattering measurements with polarization analysis on the spin ice Ho2-xYxTi2O7 (x = 0, 0.3, and 1). At 2 K, the spin flip scattering patterns are typical of a nearest-neighbor spin ice and the…

强关联电子 · 物理学 2010-11-11 L. J. Chang , Y. Su , Y. -J. Kao , Y. Z. Chou , R. Mittal , H. Schneider , Th. Brueckel , G. Balakrishnan , M. R. Lees

We present small angle neutron scattering (SANS) data collected on polycrystalline Ni$_{1-x}$V$_x$ samples with $x\geq0.10$ with confirmed random atomic distribution. We aim to determine the relevant length scales of magnetic correlations…

强关联电子 · 物理学 2020-01-10 A. Schroeder , S. Bhattarai , A. Gebretsadik , H. Adawi , J. -G. Lussier , K. L. Krycka

We have studied magnetic correlations in several compositions of stripe-ordered La2-xSrxNiO4. In this paper we show how polarized-neutron scattering has helped uncover important features of the magnetic ordering and spin dynamics. In…

强关联电子 · 物理学 2009-11-10 A. T. Boothroyd , P. G. Freeman , D. Prabhakaran , M. Enderle , J. Kulda

Light scattered off particles can become linearly polarized. Stars surrounded by oblique, co-rotating envelopes are therefore expected to manifest periodic linear polarimetric variations. The electron scattering magnetospheres of magnetic…

太阳与恒星天体物理 · 物理学 2022-01-05 M. S. Munoz , G. A. Wade , D. M. Faes , A. C. Carciofi , J. Labadie-Bartz

Compton scattering within the accretion column of magnetic cataclysmic variables (mCVs) can induce a net polarization in the X-ray emission. We investigate this process using Monte Carlo simulations and find that significant polarization…

天体物理学 · 物理学 2009-11-13 Aimee McNamara , Zdenka Kuncic , Kinwah Wu

Polarized small-angle neutron scattering (PSANS) experimental results obtained on arrays of ferromagnetic Co nanowires ($\phi\approx13$ nm) embedded in self-organized alumina (Al$_{2}$O$_{3}$) porous matrices are reported. The triangular…

New short baseline neutrino experiments open new possibilities of high precision study of different neutrino processes. We present here results of the calculation of the polarization of final nucleon in elastic NC \nu_\mu…

高能物理 - 唯象学 · 物理学 2015-06-16 S. M. Bilenky , E. Christova

Spin properties of the nucleon are discussed based on the ongoing and planned measurements. Role, method and features of radiative corrections applied in the analyses are presented. Future prospects of the spin physics are reviewed.

高能物理 - 唯象学 · 物理学 2008-02-03 Barbara Badelek

The remarkable polarization properties of the synchrotron light have lead to the advent of modern synchrotron-related spectroscopic studies with angular and/or magnetic selectivity. We give here an overview of the prominent aspect of the…

其他凝聚态物理 · 物理学 2007-05-23 Helio C. N. Tolentino , Julio C. Cezar , Narcizo M. Souza-Neto , Aline Y. Ramos

X ray resonant magnetic scattering (XRMS) was used to characterize the magnetization of 2D arrays of trilayer submicron magnets. The interpretation of the data required the understanding of the morphology of the magnets which was also…

介观与纳米尺度物理 · 物理学 2023-01-30 J. Díaz , L. M. Álvarez-Prado , S. M. Valvidares , I. Montoya , C. Redondo , R. Morales , M. Vélez

We applied the analysis of x-ray intensity angular correlation function to dilute ensembles of identical spinel crystals. Firstly, we show that the angular correlation from measured diffraction patterns with many crystals per shot converges…

材料科学 · 物理学 2017-01-27 Yun Zhao