52 citations · 285 across the 13 of their papers we have counts for
7 papers · 1 filter
Excitons of Composite Fermions
R. K. Kamilla, X. G. Wu, J. K. Jain
The low-energy excitations of filled Landau levels (LL's) of electrons involve promotion of a single electron from the topmost filled LL to the lowest empty LL. These are called ex…
Skyrmions in the Fractional Quantum Hall Effect
R. K. Kamilla, X. G. Wu, J. K. Jain
It is verified that, at small Zeeman energies, the charged excitations in the vicinity of 1/3 filled Landau level are skyrmions of composite fermions, analogous to the skyrmions of…
Composite fermion theory of collective excitations in fractional quantum Hall effect
R. K. Kamilla, X. G. Wu, J. K. Jain
The low energy neutral excitations of incompressible fractional quantum Hall states are called collective modes or magnetic excitons. This work develops techniques for computing th…
Skyrmions in Higher Landau Levels
X. -G. Wu, S. L. Sondhi
We calculate the energies of quasiparticles with large numbers of reversed spins (``skyrmions'') for odd integer filling factors 2k+1, k is greater than or equals 1. We find, in co…
Excitation Spectrum and Collective Modes of Composite Fermions
X. G. Wu, J. K. Jain
According to the composite fermion theory, the interacting electron system at filling factor is equivalent to the non-interacting composite fermion system at , w…
Hund's Rule for Composite Fermions
J. K. Jain, X. G. Wu
We consider the ``fractional quantum Hall atom" in the vanishing Zeeman energy limit, and investigate the validity of Hund's maximum-spin rule for interacting electrons in various…
Half-Integral Spin-Singlet Quantum Hall Effect
L. Belkhir, X. G. Wu, J. K. Jain
We provide numerical evidence that the ground state of a short range interaction model at is incompressible and spin-singlet for a wide range of repulsive interactions. Fur…