Nuclear spin polarization induced solely by a rotating magnetic field

Physics Today ◽  
2006 ◽  
Vol 59 (9) ◽  
pp. 20-23
Author(s):  
Barbara Goss Levi
Keyword(s):  
Magnetic Field ◽  
Spin Polarization ◽  
Nuclear Spin ◽  
Rotating Magnetic Field ◽  
Nuclear Spin Polarization

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

Nuclear spin polarization by out-of-plane spin injection from ferromagnet into an InAs heterostructure

2012 ◽  
Vol 1396 ◽  
Author(s):  
Tomotsugu Ishikura ◽  
Takahiro Hiraki ◽  
Takashi Matsuda ◽  
Joungeob Lee ◽  
Kanji Yoh
Keyword(s):  
Magnetic Field ◽  
Spin Polarization ◽  
Nuclear Spin ◽  
Spin Injection ◽  
Hall Voltage ◽  
Nuclear Spin Polarization ◽  
Polarized Electrons ◽  
Spin Polarized ◽  
Magnetic Metal ◽  
Out Of Plane

AbstractWe have investigated an InAs channel Hall-bar structure with ferromagnetic spin injector in one of the current terminals. After magnetizing the Fe electrode, spin polarized electrons are injected through the edge of the isolation mesa structure and the anomalous Hall voltage is observed, when electrons are injected from the ferromagnetic terminal. However, when electrons are injected from the non-magnetic metal (Ti/Au) of opposite terminal, the Hall voltage disappeared to the variation error level due to the fabrication imperfections. This result suggests the possibility that out-of-plane spin injection from the channel edge lead to perpendicular nuclear magnetic field. It is presumably caused by nuclear spin polarization in InAs channel near the spin source edge through Overhauser effect. The estimated internal magnetic field was 2000 Gauss.

scholarly journals Electrically tunable dynamic nuclear spin polarization in GaAs quantum dots at zero magnetic field

2018 ◽  
Vol 112 (14) ◽  
pp. 142103 ◽  
Author(s):  
M. Manca ◽  
G. Wang ◽  
T. Kuroda ◽  
S. Shree ◽  
A. Balocchi ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Quantum Dots ◽  
Spin Polarization ◽  
Nuclear Spin ◽  
Zero Magnetic Field ◽  
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
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