Subband engineering even-denominator quantum Hall states

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TR Number
Date
2010-09-09
Journal Title
Journal ISSN
Volume Title
Publisher
American Physical Society
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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Keywords
electron-system, computation, anyons, fluid, wells, Physics
Citation
Scarola, V. W. ; May, C. ; Peterson, M. R. ; et al., Sep 9, 2010. "Subband engineering even-denominator quantum Hall states," PHYSICAL REVIEW B 82(12): 121304. DOI: 10.1103/PhysRevB.82.121304