Nuclear spin depolarization via slow spin diffusion in single InAlAs quantum dots observed by using erase-pump-probe technique

Adachi, S.; Kaji, R.; Furukawa, S.; Yokoyama, Y.; Muto, S.

Nuclear spin depolarization via slow spin diffusion in single InAlAs quantum dots observed by using erase-pump-probe technique

Adachi, S.; Kaji, R.; Furukawa, S. et al.

Journal of Applied Physics, 2012, 111(10), 103531

Permalink : https://hdl.handle.net/2115/49405

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アクセス権	open access
URI	https://hdl.handle.net/2115/49405
タイトル	Nuclear spin depolarization via slow spin diffusion in single InAlAs quantum dots observed by using erase-pump-probe technique
著者	Adachi, S. ; Kaji, R. ; Furukawa, S. ; Yokoyama, Y. ; Muto, S.
e-Rad_Researcher 10221722 著者名 Adachi, S.
著者名 Kaji, R.
著者名 Furukawa, S.
著者名 Yokoyama, Y.
著者名 Muto, S.
言語	英語
キーワード	aluminium compounds
	hyperfine interactions
	III-V semiconductors
	indium compounds
	nanofabrication
	nuclear polarisation
	Overhauser effect
	self-assembly
	semiconductor growth
	semiconductor quantum dots
	spin dynamics
発行日	2012-05-15
出版者	American Institute of Physics
収録物名	Journal of Applied Physics
巻(号)	111(10)
ページ	103531
抄録	Nuclear spin diffusion in single self-assembled InAlAs quantum dots was studied by using erase-pump-probe technique. As a measure of nuclear spin polarization, transients of the Overhauser shift (OHS) of positive trion were probed in the respective pulse region. The achieved stable OHS was relaxed with a long depolarization time as long as a few tens of seconds and a diffusion constant of ～5 × 10^[-15] cm2/s was estimated. The slow transfer of the spin energy is considered to be due to the dipole-dipole interaction of the nuclei. In addition, through the magnetic field dependence of OHS, the stability of the nuclear spin polarization was briefly discussed, and the saturated maximum values of OHS were investigated experimentally.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	Copyright 2012 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in J. Appl. Phys. 111, 103531 (2012) and may be found at https://dx.doi.org/10.1063/1.4721902
PISSN	0021-8979
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1063/1.4721902