Observation of a fractional quantum Hall state at v=1/4 in a wide GaAs quantum well.
Journal Article
·
· Proposed for publication in Physical Review Letters.
OSTI ID:951534
- Princeton University, Princeton, NJ
- Bell Labs, Lucent Technologies, Murray Hill, NJ
We report the observation of an even-denominator fractional quantum Hall state at {nu}=1/4 in a high quality, wide GaAs quantum well. The sample has a quantum well width of 50 nm and an electron density of n{sub e}=2.55 x 10{sup 11} cm{sup -2}. We have performed transport measurements at T{approx}35 mK in magnetic fields up to 45 T. When the sample is perpendicular to the applied magnetic field, the diagonal resistance displays a kink at {nu}=1/4. Upon tilting the sample to an angle of {theta}=20.3{sup o} a clear fractional quantum Hall state emerges at {nu}=1/4 with a plateau in the Hall resistance and a strong minimum in the diagonal resistance.
- Research Organization:
- Sandia National Laboratories
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 951534
- Report Number(s):
- SAND2008-6826J
- Journal Information:
- Proposed for publication in Physical Review Letters., Journal Name: Proposed for publication in Physical Review Letters.
- Country of Publication:
- United States
- Language:
- English
Similar Records
Fractional quantum Hall effect at Landau level filling ν = 4/11
Charge transport in the fractional quantum Hall liquid to Wigner solid transition regime
Journal Article
·
Thu Jan 08 23:00:00 EST 2015
· Physical Review. B, Condensed Matter and Materials Physics
·
OSTI ID:1184984
Charge transport in the fractional quantum Hall liquid to Wigner solid transition regime
Thesis/Dissertation
·
Thu Dec 31 23:00:00 EST 1992
·
OSTI ID:7232853