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arXiv · 1004.1636

Subband Engineering Even-Denominator Quantum Hall States

V. W. Scarola·C. May·M. R. Peterson·M. Troyer
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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 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.

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V. W. Scarola, C. May, M. R. Peterson, M. Troyer. 2010-04-09. Subband Engineering Even-Denominator Quantum Hall States. https://doi.org/10.1103/physrevb.82.121304

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