Radical cations of hexamethylprismane: ab initio calculations and nuclear spin polarization results

1989 ◽  
Vol 111 (18) ◽  
pp. 7132-7136 ◽  
Author(s):  
Krishnan Raghavachari ◽  
Heinz D. Roth
Keyword(s):  
Ab Initio Calculations ◽  
Ab Initio ◽  
Spin Polarization ◽  
Nuclear Spin ◽  
Radical Cations ◽  
Nuclear Spin Polarization

Dynamical Nuclear Polarization

2018 ◽  
Author(s):  
M. M. Glazov
Keyword(s):  
Spin Polarization ◽  
Nuclear Spin ◽  
Nuclear Polarization ◽  
Magnetic Moments ◽  
Nonlinear Effects ◽  
Many Body ◽  
Nuclear Spin Polarization ◽  
Optical Resonances ◽  
Dynamical Nuclear Polarization ◽  
Temperature Concept

The transfer of nonequilibrium spin polarization between the electron and nuclear subsystems is studied in detail. Usually, a thermal orientation of nuclei in magnetic field is negligible due to their small magnetic moments, but if electron spins are optically oriented, efficient nuclear spin polarization can occur. The microscopic approach to the dynamical nuclear polarization effect based on the kinetic equation method, along with a phenomenological but very powerful description of dynamical nuclear polarization in terms of the nuclear spin temperature concept is given. In this way, one can account for the interaction between neighbouring nuclei without solving a complex many-body problem. The hyperfine interaction also induces the feedback of polarized nuclei on the electron spin system giving rise to a number of nonlinear effects: bistability of nuclear spin polarization and anomalous Hanle effect, dragging and locking of optical resonances in quantum dots. Theory is illustrated by experimental data on dynamical nuclear polarization.

scholarly journals Dynamics of nuclear spin polarization induced and detected by coherently precessing electron spins in fluorine-doped ZnSe

2016 ◽  
Vol 93 (8) ◽  
Author(s):  
F. Heisterkamp ◽  
E. Kirstein ◽  
A. Greilich ◽  
E. A. Zhukov ◽  
T. Kazimierczuk ◽  
...  
Keyword(s):  
Spin Polarization ◽  
Nuclear Spin ◽  
Electron Spins ◽  
Nuclear Spin Polarization

Electronic Structure of Defects in Fcc-C22

2006 ◽  
Vol 965 ◽  
Author(s):  
Helder Sousa Domingos
Keyword(s):  
Electronic Structure ◽  
Ab Initio Calculations ◽  
Ab Initio ◽  
Spin Polarization ◽  
Dopant Concentration ◽  
Magnetic Polarization ◽  
Carbon Allotrope

ABSTRACTClassical and ab-initio calculations were carried out on bulk defects and surfaces of the carbon allotrope Fcc-C22. The results revealed a number of possible defects with spin polarization and one with antiferromagnetic character. The surfaces were shown to be able to host magnetic polarization. Extrinsic light dopants (H and N) were shown to introduce spin polarization for small dopant concentration and to metallize the systems for large concentrations.

Magnetic field dependence of fluorine-19 nuclear spin polarization. The system tetrafluorobenzoquinone-tetrafluorohydroquinone

1982 ◽  
Vol 104 (22) ◽  
pp. 5878-5883 ◽  
Author(s):  
Richard S. Hutton ◽  
Heinz D. Roth ◽  
Marcia L. Manion Schilling ◽  
Anthony M. Trozzolo ◽  
Thomas M. Leslie
Keyword(s):  
Magnetic Field ◽  
Spin Polarization ◽  
Field Dependence ◽  
Nuclear Spin ◽  
Magnetic Field Dependence ◽  
Nuclear Spin Polarization

Effective collinear optical pumping for nuclear spin polarization

2014 ◽  
Vol 31 (10) ◽  
pp. 2278 ◽  
Author(s):  
Sung Jong Park ◽  
Taeksu Shin ◽  
Ju Hahn Lee ◽  
Gi Dong Kim ◽  
Yong Kyun Kim
Keyword(s):  
Spin Polarization ◽  
Nuclear Spin ◽  
Optical Pumping ◽  
Nuclear Spin Polarization
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