Related Experiment Videos
Spin transition in strongly correlated bilayer two-dimensional electron systems
I B Spielman1, L A Tracy, J P Eisenstein
1California Institute of Technology, Pasadena, California 91125, USA.
Physical Review Letters
|March 24, 2005
Summary
The quantum Hall effect
Area of Science:
- Condensed Matter Physics
- Quantum Hall Effect Studies
Background:
- Bilayer electron gases exhibit unique quantum phenomena.
- The quantum Hall effect is a key area of condensed matter physics.
Purpose of the Study:
- Investigate the phase boundary of the interlayer phase coherent quantum Hall effect at nu(T) = 1.
- Determine the influence of nuclear spin polarization on this phase boundary.
Main Methods:
- Employed a combination of heat pulse and nuclear magnetic resonance (NMR) techniques.
- Utilized bilayer electron gases in semiconductor crystals.
Main Results:
- The phase boundary is dependent on the nuclear spin polarization.
- Observed a change in electronic spin polarization during the transition.
Conclusions:
- Nuclear spin polarization significantly impacts the quantum Hall effect in bilayer systems.
- Challenges the conventional assumption of electronic spin polarization during this transition.