Published October 10, 2012 | Version v1
Journal article Metadata-only

Insulator, semiclassical oscillations and quantum Hall liquids at low magnetic fields

Creators

  • 1. Graduate Institute of Applied Physics, National Taiwan University, Taipei 106, Taiwan (China)
  • 2. Department of Physics, National Taiwan University, Taipei 106, Taiwan (China)
  • 3. Department of Electrical Engineering, University at Buffalo, State University of New York, Buffalo, NY 14260-1920 (United States)
  • 4. National Measurement Laboratory, Center for Measurement Standards, Industrial Technology Research Institute, Hsinchu 300, Taiwan (China)
  • 5. Department of Electrophysics, National Chiayi University, Chiayi 600, Taiwan (China)
  • 6. Department of Physics, National Tsinghwa University, Hsinchu 300, Taiwan (China)

Description

Magneto-transport measurements are performed on two-dimensional GaAs electron systems to probe the quantum Hall (QH) effect at low magnetic fields. Oscillations following the Shubnikov-de Haas (SdH) formula are observed in the transition from the insulator to QH liquid when the observed almost temperature-independent Hall slope indicates insignificant interaction correction. Our study shows that the existence of SdH oscillations in such a transition can be understood based on the non-interacting model.

Availability note (English)

Available from http://dx.doi.org/10.1088/0953-8984/24/40/405601

Additional details

Identifiers

DOI
10.1088/0953-8984/24/40/405601;

Publishing Information

Journal Title
Journal of Physics. Condensed Matter
Journal Volume
24
Journal Issue
40
Journal Page Range
[7 p.]
ISSN
0953-8984
CODEN
JCOMEL

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
44041132
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
CORRECTIONS; GALLIUM ARSENIDES; HALL EFFECT; INTERACTIONS; MAGNETIC FIELDS; MAGNETORESISTANCE; OSCILLATIONS; SEMICLASSICAL APPROXIMATION
Descriptors DEC
APPROXIMATIONS; ARSENIC COMPOUNDS; ARSENIDES; CALCULATION METHODS; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; GALLIUM COMPOUNDS; PHYSICAL PROPERTIES; PNICTIDES