Dynamic nuclear polarization and nuclear magnetic resonance in the simplest pseudospin quantum Hall ferromagnet

Hongwu Liu, Kaifeng Yang, T. D. Mishima, M. B. Santos, Y. Hirayama

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

We present dynamic nuclear polarization (DNP) in the simplest pseudospin quantum Hall ferromagnet (QHF) of an InSb two-dimensional electron gas with a large g factor using tilted magnetic fields. The DNP-induced amplitude change in a resistance spike of the QHF at large current enables observation of the resistively detected nuclear magnetic resonance of the high nuclear spin isotope I 115 n with nine quadrupole splittings. Our results demonstrate the importance of domain structures in the DNP process. The nuclear spin relaxation time T1 in this QHF was relatively short (∼120s) and almost temperature independent.

Original languageEnglish
Article number241304
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume82
Issue number24
DOIs
Publication statusPublished - 2010 Dec 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint

Dive into the research topics of 'Dynamic nuclear polarization and nuclear magnetic resonance in the simplest pseudospin quantum Hall ferromagnet'. Together they form a unique fingerprint.

Cite this