Spin polarization in quantum Hall state obtained by Kerr rotation spectra

H. Ito, M. Seo, D. Fukuoka, K. Oto, K. Muro, Yoshiro Hirayama, N. Kumada

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We developed a novel system for a high sensitive measurement of Kerr rotation spectra, and Kerr rotation spectra of quantum Hall system in AlGaAs/GaAs 17 nm quantum well were measured. Spin polarization of quantum Hall states was obtained by integrating the spectra, since Kerr rotation spectra reflect spin population of electrons. The spin polarization decreased rapidly on both sides of ν=1, which is ascribed to Skyrmion effect. However, the spin polarization present a flat region around ν=1 which means a quantum Hall ferromagnet is not fully spin polarized.

Original languageEnglish
Title of host publicationPhysics of Semiconductors - 30th International Conference on the Physics of Semiconductors, ICPS-30
Pages637-638
Number of pages2
DOIs
Publication statusPublished - 2011 Dec 1
Event30th International Conference on the Physics of Semiconductors, ICPS-30 - Seoul, Korea, Republic of
Duration: 2010 Jul 252010 Jul 30

Publication series

NameAIP Conference Proceedings
Volume1399
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other30th International Conference on the Physics of Semiconductors, ICPS-30
CountryKorea, Republic of
CitySeoul
Period10/7/2510/7/30

Keywords

  • Kerr rotation
  • Quantum Hall effect
  • Skyrmion

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Spin polarization in quantum Hall state obtained by Kerr rotation spectra'. Together they form a unique fingerprint.

Cite this