منابع مشابه
Charge Density
Low-temperature single-crystal neutron and X-ray diffraction data were collected for bullvalene (Figure 1). X —N Fourier and multipole static deformation electron density maps were calculated and compared. Atomic mean-square-displacement parameters were analysed in the framework of the rigid-body motion model and the residual amplitudes (UOBS — t/TLS) were graphically interpreted. The prelimina...
متن کاملcharge density.
We study the Euclidean two-point correlation function Gq(x) of the topological charge density in QCD. A general statement based on reflection positivity tells us that Gq(x) < 0 for x 6= 0. On the other hand the topological susceptibility χq = ∫ dxGq(x) is a positive quantity. This indicates that Gq(x) developes a positive contact term at x = 0, that contributes to the determination of the physi...
متن کاملCharge, Spin and Momentum Density
C427 of the complexes has been investigated by theoretical calculations[2], but is still in controversy. Here we show the bonding nature of the 1zirconacyclopent-3-yne complex by means of experimental charge density analysis. Diffraction data were collected using synchrotron radiations at KEK PF-AR NW2 beam line by Rigaku Mercury CCD diffractometer up to sin / = 1.0 Å. Multipole expansion metho...
متن کاملCharge, Spin and Momentum Density
A six-coordinated iron(II) complex, t-Fe(tzpy)2(NCS)2 (tzpy = 3(2-pyridyl)[1,2,3]triazolo[1,5-a]pyridine), undergoes a graduate spin transition from a paramagnetic high spin state (T2, S = 2, HS-1) above 200K to a diamagnetic low spin state (A1, S = 0, LS-1) below 75 K according to the magnetic measurement. The crystal structures of both HS-1 and LS-1 are studied at 298 and 40K respectively. Si...
متن کاملChiral charge-density waves.
We discovered the chirality of charge-density waves (CDW) in 1T-TiSe₂ by using STM and time-domain optical polarimetry. We found that the CDW intensity becomes Ia₁∶Ia₂∶Ia₃ = 1∶0.7 ± 0.1∶0.5 ± 0.1, where Ia(i) (i=1,2,3) is the amplitude of the tunneling current contributed by the CDWs. There were two states, in which the three intensity peaks of the CDW decrease clockwise and anticlockwise. The ...
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ژورنال
عنوان ژورنال: Journal of Electromagnetic Analysis and Applications
سال: 2017
ISSN: 1942-0730,1942-0749
DOI: 10.4236/jemaa.2017.95007