منابع مشابه
Composite Fermions Phenomenology in Quantum Hall Effect
An effort is made to understand the phenomenological composite fermion model of the quantum Hall effect. The odd denominators are composed by adding ±1 to the even numbers, 2, 4, 6, and 8. Although the denominators are phenomenologically made to agree with the experimental data, the physics of the CF model ,i.e., the even flux quanta attachment to the electron is found to be incorrect. keshav@m...
متن کاملStatistics of Composite Fermions in Quantum Hall Effect
The high Landau level filling fractions 5/2, 7/3 and 8/3 are interpreted by using the angular momentum model. It is found that for the odd number of flux quanta, the quasiparticles called the " composite fermions " are fermions but for even number-, the quasiparticles are a mixture of bosons and fermions.Therefore, the theory of " composite fermions " is internally inconsistent.
متن کاملPhonon Scattering of Composite Fermions
We study the principal aspects of the interaction between acoustic phonons and two-dimensional electrons in quantizing magnetic elds corresponding to even denominator fractions. Using the composite fermion approach we derive the vertex of the electron-phonon coupling mediated by the Chern-Simons gauge eld. We estimate acoustic phonon contribution to electronic mobility, phonon-drag thermopower,...
متن کاملState : Magnetized Composite Fermions
The Fermionic Chern-Simons approach has had remarkable success in the description of quantum Hall states at even denominator filling fractions ν = 1 2m . In this paper we review a number of recent works concerned with modeling this state as a Landau-Silin Fermi liquid. We will then focus on one particular problem with constructing such a Landau theory that becomes apparent in the limit of high ...
متن کاملConductivity of paired composite fermions.
We develop a phenomenological description of the nu=5/2 quantum Hall state in which the Halperin-Lee-Read theory of the half-filled Landau level is combined with a p-wave pairing interaction between composite fermions (CFs). The electromagnetic response functions for the resulting mean-field superconducting state of the CFs are calculated and used in an RPA calculation of the q and omega depend...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 1995
ISSN: 0163-1829,1095-3795
DOI: 10.1103/physrevb.51.7369