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Paired Composite Fermion Phase of Quantum Hall Bilayers at ?=(1)/(2)+(1)/(2)

Möller, Gunnar, Simon, Steven H, Rezayi, Edward H (2008) Paired Composite Fermion Phase of Quantum Hall Bilayers at ?=(1)/(2)+(1)/(2). Physical Review Letters, 101 (1). p. 176803. ISSN 0031-9007. E-ISSN 1079-7114. (doi:10.1103/PhysRevLett.101.176803) (KAR id:55554)

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We provide numerical evidence for composite fermion pairing in quantum Hall bilayer systems at filling nu=1/2+1/2 for intermediate spacing between the layers. We identify the phase as p_x+i p_y pairing, and construct high accuracy trial wave functions to describe the ground state on the sphere. For large distances between the layers, and for finite systems, a competing ‘‘Hund’s rule’’ state, or composite fermion liquid, prevails for certain system sizes.

Item Type: Article
DOI/Identification number: 10.1103/PhysRevLett.101.176803
Uncontrolled keywords: Physics of Quantum Materials
Subjects: Q Science > QC Physics > QC173.45 Condensed Matter
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Gunnar Moeller
Date Deposited: 05 Dec 2017 15:02 UTC
Last Modified: 05 Jul 2019 10:39 UTC
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