Direct test of the composite-fermion model in quantum Hall systems
نویسندگان
چکیده
منابع مشابه
Direct test of composite fermion model in quantum Hall systems
We show that neutron scattering and Raman scattering experiments can unambiguously determine a composite fermion parameter, viz., the effective number of Landau Levels filled by the composite fermions. For this purpose, one needs partially polarized or more preferably unpolarized quantum Hall states. We further find that spin correlation function acts as an order parameter in the spin transitio...
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We derive the effective Hamiltonian for the composite fermion in double-layer quantum Hall systems with inter-layer tunneling at total Landau-level filling factor ν = 1/m, where m is an integer. We find that the ground state is the triplet p-wave BCS pairing state of the composite fermions. At ν = 1/2, the ground state of the system evolves from the Halperin (3, 3, 1)-state toward the Pfaffian-...
متن کاملThe composite Fermion model of quantum Hall effect is internally inconsistent
The composite fermion (CF) model of the quantum Hall effect which gives the correct series of charges is based on attachment of flux quanta to the electron. The construction of the series of charges leads to a field expression which requires that flux quanta are attached to the electron. The series based on the experimental data is correct but the field deduced from such a series is found to be...
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The composite Fermion (CF) picture offers a simple intuitive way of understanding many of the surprising properties of a strongly interacting twodimensional electron fluid in a large magnetic field. The simple way in which the mean field CF picture describes the low lying bands of angular momentum multiplets for any value of the applied magnetic field is illustrated and compared with the result...
متن کاملComments on “ Composite Fermion ( CF ) model of quantum Hall effect - Two - dimensional electron
The flux quanta attachment to the electrons creates composite fermions (CFs). The mass, the size and the density of the CF are inconsistent with real material. The sequence of fractional charges which suggest formation of CF agrees with the data but there are no monopoles in GaAs. Hence the CF model is internally inconsistent. There are two options at this stage. (1) The flux quanta are attache...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 1996
ISSN: 0163-1829,1095-3795
DOI: 10.1103/physrevb.54.8699