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Paired composite fermion phase of quantum Hall bilayers at nu=1/2+1/2.

Abstract:
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)+ip_(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.
Publication status:
Published

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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Theoretical Physics
Role:
Author
Journal:
Physical review letters
Volume:
101
Issue:
17
Pages:
176803
Publication date:
2008-10-05
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
URN:
uuid:bf315257-9ade-4810-875b-f7b3c6c1ec42
Source identifiers:
168131
Local pid:
pubs:168131
Language:
English

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