scholarly journals Spintronics: Enantiospecific Spin Polarization of Electrons Photoemitted Through Layers of Homochiral Organic Molecules (Adv. Mater. 44/2014)

2014 ◽  
Vol 26 (44) ◽  
pp. 7531-7531
Author(s):  
Miguel Ángel Niño ◽  
Iwona Agnieszka Kowalik ◽  
Francisco Jesús Luque ◽  
Dimitri Arvanitis ◽  
Rodolfo Miranda ◽  
...  
Keyword(s):  
Spin Polarization ◽  
Organic Molecules

scholarly journals Spin-polarization of organic molecules at the ferromagnetic surface

2015 ◽  
Vol 64 (18) ◽  
pp. 187305
Author(s):  
Yi Ding ◽  
Wu Zhen ◽  
Yang Liu ◽  
Dai Ying ◽  
Xie Shi-Jie
Keyword(s):  
Spin Polarization ◽  
Organic Molecules

Effectiveness of organic molecules for spin filtering in an organic spin valve: Reaction-induced spin polarization for Co atopAlq3

2015 ◽  
Vol 91 (4) ◽  
Author(s):  
Tu-Ngoc Lam ◽  
Yu-Ling Lai ◽  
Chih-Han Chen ◽  
Po-Hung Chen ◽  
Yuet-Loy Chan ◽  
...  
Keyword(s):  
Spin Polarization ◽  
Organic Molecules ◽  
Spin Valve ◽  
Spin Filtering

Optical Detection of NQR: Crystal Field and Matrix Effects on Halogenated Organic Molecules

1986 ◽  
Vol 41 (1-2) ◽  
pp. 425-430 ◽  
Author(s):  
C. v. Borczyskowski
Keyword(s):  
Triplet State ◽  
Spin Polarization ◽  
Optical Pumping ◽  
Organic Molecules ◽  
Matrix Effects ◽  
Electron Spin Polarization ◽  
Excited Triplet State ◽  
Excited Triplet ◽  
Defect Site ◽  
Nmr Sensitivity

Electron spin polarization or alignment achieved in the excited triplet state of organic molecules can be transferred into nuclear spin polarization (alignment) during an optical pumping cycle. Due to this effect, quadrupole resonance (NQR) investigations of nuclei with concentrations of 10-5 molar are possible in the electronic singlet ground and excited triplet state in one and the same experiment by the applied optical pumping cycle. By this conventional NMR sensitivity is enhanced by several orders of magnitude, enabling investigations of defect site structures in molecular crystals.

Enantiospecific Spin Polarization of Electrons Photoemitted Through Layers of Homochiral Organic Molecules

2014 ◽  
Vol 26 (44) ◽  
pp. 7474-7479 ◽  
Author(s):  
Miguel Ángel Niño ◽  
Iwona Agnieszka Kowalik ◽  
Francisco Jesús Luque ◽  
Dimitri Arvanitis ◽  
Rodolfo Miranda ◽  
...  
Keyword(s):  
Spin Polarization ◽  
Organic Molecules

High Resolution Replication of Organoclay Surfaces

1982 ◽  
Vol 40 ◽  
pp. 576-577
Author(s):  
W. W. Barker ◽  
W. E. Rigsby ◽  
V. J. Hurst ◽  
W. J. Humphreys
Keyword(s):  
Clay Mineral ◽  
Organic Molecule ◽  
Organic Molecules ◽  
X Ray Diffraction ◽  
Xrd Pattern ◽  
X Ray ◽  
Naturally Occurring ◽  
Silicate Layers ◽  
Mineral Identification

Experimental clay mineral-organic molecule complexes long have been known and some of them have been extensively studied by X-ray diffraction methods. The organic molecules are adsorbed onto the surfaces of the clay minerals, or intercalated between the silicate layers. Natural organo-clays also are widely recognized but generally have not been well characterized. Widely used techniques for clay mineral identification involve treatment of the sample with H2 O2 or other oxidant to destroy any associated organics. This generally simplifies and intensifies the XRD pattern of the clay residue, but helps little with the characterization of the original organoclay. Adequate techniques for the direct observation of synthetic and naturally occurring organoclays are yet to be developed.

Direct phase determination in electron crystallography: small organic molecules

1992 ◽  
Vol 50 (2) ◽  
pp. 1166-1167
Author(s):  
Douglas L. Dorset
Keyword(s):  
Organic Molecules ◽  
Data Sets ◽  
Temperature Structure ◽  
3D Analysis ◽  
Intensity Data ◽  
Electron Crystallography ◽  
Phase Determination ◽  
Measured Intensity ◽  
3D Data

The quantitative use of electron diffraction intensity data for the determination of crystal structures represents the pioneering achievement in the electron crystallography of organic molecules, an effort largely begun by B. K. Vainshtein and his co-workers. However, despite numerous representative structure analyses yielding results consistent with X-ray determination, this entire effort was viewed with considerable mistrust by many crystallographers. This was no doubt due to the rather high crystallographic R-factors reported for some structures and, more importantly, the failure to convince many skeptics that the measured intensity data were adequate for ab initio structure determinations.We have recently demonstrated the utility of these data sets for structure analyses by direct phase determination based on the probabilistic estimate of three- and four-phase structure invariant sums. Examples include the structure of diketopiperazine using Vainshtein's 3D data, a similar 3D analysis of the room temperature structure of thiourea, and a zonal determination of the urea structure, the latter also based on data collected by the Moscow group.

A MOLECULAR DYNAMICS STUDY OF ELECTRONIC SPUTTERING OF LARGE ORGANIC MOLECULES

1989 ◽  
Vol 50 (C2) ◽  
pp. C2-33-C2-35 ◽  
Author(s):  
D. FENYÖ ◽  
B. U.R. SUNDQVIST ◽  
B. KARLSSON ◽  
R. E. JOHNSON
Keyword(s):  
Molecular Dynamics ◽  
Organic Molecules
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