Nuclear-spin polarization detection device and nuclear-spin polarization detection method
AssigneeJapan Science and Technology Agency
InventorsHongwu Liu, Kaifeng Yang, Yoshiro Hirayama
Life of this patent
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Abstract
Provided is a total electrical nuclear-spin polarization device that is applicable to many narrow-gap semiconductor two-dimensional quantum structures such as InSb with a large g-factor and with a mobility having a normal value. A nuclear-spin polarization device 1 creates a state where the Landau-level separation and the Zeeman-level separation in a sample are equal to each other in a magnetic field, thereby crossing different spin states, and detects nuclear-spin polarization from a resistance change at the crossing point caused by the nuclear-spin polarization.
Claims13
A nuclear-spin polarization detection device comprising
- a crossing part that inclines a two-dimensional quantum structure in a magnetic field to cross Landau-level separation and Zeeman-level separation, and
- a polarizing part that polarizes nuclear spins in the two-dimensional quantum structure,
- wherein the device detects polarization of the nuclear spins at a position where the Landau-level separation and the Zeeman-level separation are crossed by the crossing part.
A nuclear-spin polarization detection method comprising:
- (a) inclining a two-dimensional quantum structure in a magnetic field to cross Landau-level separation and Zeeman-level separation,
- (c) polarizing nuclear spins in the two-dimensional quantum structure, and
- (d) detecting polarization of the nuclear spins at a position where the Landau-level separation and the Zeeman-level separation are crossed by said (a).
Dependencies are inferred from the claim text.