Reentrant v = 1 quantum Hall state in a two-dimensional hole system.

Journal Article · Sat Oct 01 04:00:00 EDT 2011 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.107.176810· OSTI ID:1039515

Graninger, A L; Kamburov, D; Shayegan, M; Pfeiffer, L N; West, K W; Baldwin, K W; Winkler, R ^[1]

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1. Materials Science Division

We report the observation of a reentrant quantum Hall state at the Landau level filling factor {nu} = 1 in a two-dimensional hole system confined to a 35-nm-wide (001) GaAs quantum well. The reentrant behavior is characterized by a weakening and eventual collapse of the {nu} = 1 quantum Hall state in the presence of a parallel magnetic field component B{parallel}, followed by a strengthening and reemergence as B{parallel} is further increased. The robustness of the {nu} = 1 quantum Hall state during the transition depends strongly on the charge distribution symmetry of the quantum well, while the magnitude of B{parallel} needed to invoke the transition increases with the total density of the system.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: SC; NSF
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 1039515
• Report Number(s): ANL/MSD/JA-71904
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 17 Vol. 107; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
CHARGE DISTRIBUTION
MAGNETIC FIELDS
QUANTUM WELLS
SYMMETRY