Session J11: Fractional Quantum Hall Effect I
11:15 AM–2:03 PM, Tuesday, March 22, 2011
Room: D222
Sponsoring Unit:
FIAP
Chair: Nikolai Zhitenev, National Institute of Standards and Technology
Abstract ID: BAPS.2011.MAR.J11.8
Abstract: J11.00008 : Subband Engineering Even-Denominator Quantum Hall States
12:39 PM–12:51 PM
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Abstract 
Authors:
Vito Scarola
(Virginia Tech)
Christian May
(ETH Zurich)
Michael Peterson
(University of California, Santa Barbara)
Matthias Troyer
(ETH Zurich)
Proposed even-denominator fractional quantum Hall effect (FQHE) states suggest the possibility of excitations with non-Abelian braid statistics. Recent experiments on wide square quantum wells observe even-denominator FQHE even under electrostatic tilt. We theoretically analyze these structures and develop a procedure to accurately test proposed quantum Hall wavefunctions. We find that tilted wells favor partial subband polarization to yield Abelian even-denominator states. Our results show that tilting quantum wells effectively engineers different interaction potentials allowing exploration of a wide variety of even-denominator states.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2011.MAR.J11.8