Spatial variation of dynamic nuclear spin polarization probed by the non-local Hanle effect

J. Shiogai, M. Ciorga, M. Utz, D. Schuh, M. Kohda, D. Bougeard, T. Nojima, D. Weiss, J. Nitta

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The spatial distribution of dynamic nuclear spin polarization (DNP) has been investigated in a lateral all-semiconductor spin-injection device based on a (Ga,Mn)As/n+-GaAs spin-Esaki diode. The DNP induced by the hyperfine interaction has been probed via satellite peaks in non-local Hanle-type spin precession signals, indicating the recovery of electron spin polarization. A quantitative analysis using the self-consistent calculation reproduces the magnetic field position of the satellite peaks as a function of spin injection bias and injector-detector separation. The distance dependence of the Hanle curves reveals that the spin-lattice relaxation rather than the hyperfine interaction is the dominant mechanism of nuclear spin relaxation in the non-local region.

Original languageEnglish
Article number132403
JournalApplied Physics Letters
Volume112
Issue number13
DOIs
Publication statusPublished - 2018 Mar 26

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Fingerprint

Dive into the research topics of 'Spatial variation of dynamic nuclear spin polarization probed by the non-local Hanle effect'. Together they form a unique fingerprint.

Cite this