Effect of the Nuclear Hyperfine Field on the 2D Electron Conductivity in the Quantum Hall Regime Metadata

Metadata describes a digital item, providing (if known) such information as creator, publisher, contents, size, relationship to other resources, and more. Metadata may also contain "preservation" components that help us to maintain the integrity of digital files over time.

Title

  • Main Title Effect of the Nuclear Hyperfine Field on the 2D Electron Conductivity in the Quantum Hall Regime

Creator

  • Author: VITKALOV,S.A.
    Creator Type: Personal
  • Author: BOWERS,C.R.
    Creator Type: Personal
  • Author: SIMMONS,JERRY A.
    Creator Type: Personal
  • Author: RENO,JOHN L.
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization
    Contributor Info: US Department of Energy (United States)

Publisher

  • Name: Sandia National Laboratories
    Place of Publication: Albuquerque, New Mexico
    Additional Info: Sandia National Labs., Albuquerque, NM, and Livermore, CA (United States)

Date

  • Creation: 2000-07-13

Language

  • English

Description

  • Content Description: The effect of the nuclear hyperfine interaction on the dc conductivity of 2D electrons under quantum Hall effect conditions at filling factor v= 1 is observed for the first time. The local hyperfine field enhanced by dynamic nuclear polarization is monitored via the Overhauser shift of the 2D conduction electron spin resonance in AlGaAs/GaAs multiquantum-well samples. The experimentally observed change in the dc conductivity resulting from dynamic nuclear polarization is in agreement with a thermal activation model incorporating the Zeeman energy change due to the hyperfine interaction. The relaxation decay time of the dc conductivity is, within experimental error, the same as the relaxation time of the nuclear spin polarization determined from the Overhauser shift. These findings unequivocally establish the nuclear spin origins of the observed conductivity change.
  • Physical Description: 5 p.

Subject

  • Keyword: Hyperfine Structure
  • Keyword: Spin-Spin Relaxation
  • Keyword: Electron Spin Resonance
  • STI Subject Categories: 36 Materials Science
  • Keyword: Polarization
  • Keyword: Hall Effect
  • Keyword: Aluminium Arsenides
  • Keyword: Relaxation Time
  • Keyword: Electric Conductivity
  • Keyword: Gallium Arsenides

Source

  • Journal Name: JETP Letters; Journal Volume: 69; Journal Issue: 1; Other Information: Pages 66-70

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Report No.: SAND2000-1647J
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 759947
  • Archival Resource Key: ark:/67531/metadc706819

Note

  • Display Note: OSTI as DE00759947
  • Display Note: Medium: P; Size: 5 pages