Inverse spin Hall voltage enhancement in cascaded Py/Ta micro-array

2021 ◽  
Vol 119 (19) ◽  
pp. 192401
Author(s):  
Fei Huang ◽  
Bin Peng ◽  
Zhuoyue Zhang ◽  
Wanli Zhang ◽  
Wenxu Zhang
Keyword(s):  
Hall Voltage ◽  
Micro Array

Brilliant attosecond γ-ray emission and high-yield positron production from intense laser-irradiated nano-micro array

2021 ◽  
Vol 28 (2) ◽  
pp. 023110
Author(s):  
Liang-qi Zhang ◽  
Shao-dong Wu ◽  
Hai-rong Huang ◽  
Hao-yang Lan ◽  
Wei-yuan Liu ◽  
...  
Keyword(s):  
Intense Laser ◽  
High Yield ◽  
Micro Array ◽  
Γ Ray ◽  
Positron Production

scholarly journals Chirality-induced spin polarization places symmetry constraints on biomolecular interactions

2017 ◽  
Vol 114 (10) ◽  
pp. 2474-2478 ◽  
Author(s):  
Anup Kumar ◽  
Eyal Capua ◽  
Manoj K. Kesharwani ◽  
Jan M. L. Martin ◽  
Einat Sitbon ◽  
...  
Keyword(s):  
Spin Polarization ◽  
Noncovalent Interactions ◽  
Electronic Charge ◽  
Biological Processes ◽  
Interaction Energies ◽  
Hall Voltage ◽  
Charge Redistribution ◽  
Chiral Molecules ◽  
Quantum Chemistry Calculations ◽  
Symmetry Constraints

Noncovalent interactions between molecules are key for many biological processes. Necessarily, when molecules interact, the electronic charge in each of them is redistributed. Here, we show experimentally that, in chiral molecules, charge redistribution is accompanied by spin polarization. We describe how this spin polarization adds an enantioselective term to the forces, so that homochiral interaction energies differ from heterochiral ones. The spin polarization was measured by using a modified Hall effect device. An electric field that is applied along the molecules causes charge redistribution, and for chiral molecules, a Hall voltage is measured that indicates the spin polarization. Based on this observation, we conjecture that the spin polarization enforces symmetry constraints on the biorecognition process between two chiral molecules, and we describe how these constraints can lead to selectivity in the interaction between enantiomers based on their handedness. Model quantum chemistry calculations that rigorously enforce these constraints show that the interaction energy for methyl groups on homochiral molecules differs significantly from that found for heterochiral molecules at van der Waals contact and shorter (i.e., ∼0.5 kcal/mol at 0.26 nm).

Development of a micro array type electron multiplier

2002 ◽  
Author(s):  
J. Kawarabayashi ◽  
D. Fukuda ◽  
H. Takahashi ◽  
T. Iguchi ◽  
M. Nakazawa ◽  
...  
Keyword(s):  
Electron Multiplier ◽  
Array Type ◽  
Micro Array
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