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    Subband engineering even-denominator quantum Hall states

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    Downloads: 267
    Date
    2010-09-09
    Author
    Scarola, Vito W.
    May, C.
    Peterson, M. R.
    Troyer, M.
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    Abstract
    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 indicate even-denominator FQHE even under electrostatic tilt. We theoretically analyze these structures and develop a procedure to accurately test proposed quantum Hall wave functions. 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.
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    http://hdl.handle.net/10919/25419
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    • Scholarly Works, Department of Physics [873]

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