Effective Mass and g Factor of Four-Flux-Quanta Composite Fermions

Journal Article · Fri Jan 01 00:00:00 EST 1999 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.82.592· OSTI ID:295562

Yeh, A S; Tsui, D C ^[1]; Stormer, H L; Pfeiffer, L N; Baldwin, K W; West, K W ^[2]; Stormer, H L ^[3]; Tsui, D C ^[4]

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1. Department of Physics, Princeton University, Princeton, New Jersey 08540 (United States)
2. Bell Labs, Lucent Technologies, Murray Hill, New Jersey 07974 (United States)
3. Department of Physics and Department of Applied Physics, Columbia University, New York, New York 10023 (United States)
4. Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08540 (United States)

We investigate the properties of composite fermions with four attached flux quanta through tilted-field experiments near Landau level filling factor {nu}=3/4 . The observed collapse of fractional quantum Hall gaps in the vicinity of this quarter-filling state can be comprehensively understood in terms of composite fermions with mass and spin. Remarkably, the effective mass and g factor of these four-flux-quanta composite fermions around {nu}=3/4 are very similar to those of two-flux-quanta composite fermions around {nu}=3/2 . {copyright} {ital 1999} {ital The American Physical Society }

• OSTI ID: 295562
• Journal Information: Physical Review Letters, Vol. 82, Issue 3; Other Information: PBD: Jan 1999
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
HALL EFFECT
G VALUE
FERMIONS
EFFECTIVE MASS
COMPOSITE MODELS
FLUX QUANTIZATION
ENERGY GAP
GALLIUM ARSENIDES
ALUMINIUM ARSENIDES
MAGNETORESISTANCE