Energy gaps for fractional quantum Hall states described by a Chern-Simons composite fermion wavefunction

2001 ◽  
Vol 23 (4) ◽  
pp. 437-440 ◽  
Author(s):  
O. Ciftja ◽  
C. Wexler
Keyword(s):  
Quantum Hall ◽  
Composite Fermion ◽  
Fractional Quantum ◽  
Fractional Quantum Hall ◽  
Quantum Hall States ◽  
Energy Gaps ◽  
Chern Simons ◽  
Hall States

scholarly journals THE TWO-FLUX COMPOSITE FERMION SERIES OF FRACTIONAL QUANTUM HALL STATES IN STRAINED (100) Si

2004 ◽  
Vol 18 (27n29) ◽  
pp. 3533-3535 ◽  
Author(s):  
K. LAI ◽  
W. PAN ◽  
D. C. TSUI ◽  
S. LYON ◽  
M. MUHLBERGER ◽  
...  
Keyword(s):  
Quantum Well ◽  
Quantum Hall ◽  
High Mobility ◽  
Composite Fermion ◽  
Strained Si ◽  
Fractional Quantum ◽  
Fractional Quantum Hall ◽  
Quantum Hall States ◽  
Hall States

Magnetotransport properties are studied in a high-mobility 2DES in the strained Si quantum well. We observe around ν=1/2 the two-flux composite fermion ( CF 2) series of the FQHE states at ν=2/3, 3/5, 4/7, and at ν=4/9, 2/5, 1/3. Of the CF series, the ν=3/5 state is weaker than the nearby 4/7 state and the 3/7 state is missing, resembling the observation that the ν=3 is weaker than the ν=4 state. Our data indicate that the CF model still applies for the multivalley Si / SiGe system when taking into account the two-fold valley degeneracy.

scholarly journals Composite fermion model for entanglement spectrum of fractional quantum Hall states

2015 ◽  
Vol 92 (11) ◽  
Author(s):  
Simon C. Davenport ◽  
Iván D. Rodríguez ◽  
J. K. Slingerland ◽  
Steven H. Simon
Keyword(s):  
Quantum Hall ◽  
Composite Fermion ◽  
Fractional Quantum ◽  
Fractional Quantum Hall ◽  
Fermion Model ◽  
Entanglement Spectrum ◽  
Quantum Hall States ◽  
Hall States
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