Microscopic characteristics of dynamic nuclear polarization and selective nuclear depolarization at the ν = 2/3 spin phase transition

M. H. Fauzi, S. Watanabe, Y. Hirayama

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The ability to manipulate the nuclear spin degree of freedom in semiconductor quantum structures is necessary for development of nuclear spintronics based on solid-state systems. Here, we developed a method to selectively depolarize the nuclear spin, the 〈+I z〉 or the 〈-I z〉 component, residing in a GaAs quantum well specimen after dynamic nuclear polarization by applying radio frequency pulse to either spin-unpolarized or spin-polarized nuclear magnetic resonance lines obtained at the spin transition of the filling ν = 2/3. Our results are evidence that the spin-unpolarized (spin-polarized) domain mediates the 〈+I z〉 (〈-I z〉) nuclear spin polarization.

Original languageEnglish
Article number162105
JournalApplied Physics Letters
Volume101
Issue number16
DOIs
Publication statusPublished - 2012 Oct 15

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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