321 citations · 458 across the 6 of their papers we have counts for
6 papers
Variational quantum Monte Carlo study of two-dimensional Wigner crystals: exchange, correlation, and magnetic field effects
Xuejun Zhu, Steven G. Louie
The two-dimensional Wigner crystals are studied with the variational quantum Monte Carlo method. The close relationship between the ground-state wavefunction and the collective exc…
Exciton condensate in semiconductor quantum well structures.
Xuejun Zhu, P. B. Littlewood, M. S. Hybertsen +1
We propose that the exciton condensate may form in a well-controlled way in appropriately arranged semiconductor quantum well structures. The mean-field theory of Keldysh and Kopae…
Four-wave mixing and terahertz emission from three-level systems in quantum wells: effects of inhomogeneous broadening
Xuejun Zhu, Mark S. Hybertsen, P. B. Littlewood +1
Using a perturbation theory based on the density-matrix formulation, we study the nonlinear optical responses of a noninteracting three-level model system to consecutive coherent p…
Sliding motion of a two-dimensional Wigner crystal in a strong magnetic field
Xuejun Zhu, P. B. Littlewood, A. J. Millis
We study the sliding state of a two-dimensional Wigner crystal in a strong magnetic field and a random impurity potential. Using a high-velocity perturbation theory, we compute the…
Laughlin liquid - Wigner solid transition at high density in wide quantum wells
Rodney Price, Xuejun Zhu, S. Das Sarma +1
Assuming that the phase transition between the Wigner solid and the Laughlin liquid is first-order, we compare ground-state energies to find features of the phase diagram at fixed…
Freezing of the quantum Hall liquid at 1/7 and 1/9
Rodney Price, Xuejun Zhu, P. M. Platzman
We compare the free energy computed from the ground state energy and low-lying excitations of the 2-D Wigner solid and the fractional quantum Hall liquid, at magnetic filling facto…