10 papers
In-plane Magnetic Field Induced Kosterlitz-Thouless Type Metal Insulator Transition in Coupled Double Quantum Wells
D. Z. Liu, X. C. Xie
We study the localization properties in coupled double quantum wells with an in-plane magnetic field. The localization length is directly calculated using a transfer matrix techniq…
Coulomb Correlations and Pseudo-gap Effects in a Pre-formed Pair Model for the Cuprates
Jiri Maly, K. Levin, D. Z. Liu
We extend previous work on pre-formed pair models of superconductivity to incorporate Coulomb correlation effects. For neutral systems, these models have provided a useful scheme w…
Theory of Phonon Shakeup Effects on Photoluminescence from the Wigner Crystal in a Strong Magnetic Field
D. Z. Liu, H. A. Fertig, S. Das Sarma
We develop a method to compute shakeup effects on photoluminescence from a strong magnetic field induced two-dimensional Wigner crystal. Only localized holes are considered. Our me…
Study of Scaling in the Fractional Quantum Hall Effect
X. C. Xie, D. Z. Liu, J. K. Jain
In the composite fermion model of the fractional quantum Hall effect, composite fermions experience, in addition to the usual potential disorder, also a magnetic flux disorder. Mot…
Transition from Integer Quantum Hall State to Insulator
X. C. Xie, D. Z. Liu
We study disorder induced transition between quantum Hall states and insulator state in a {\it lattice} model. We find the positions of the extended states do not change as disorde…
Superconducting Order Parameter Symmetry in Multi-layer Cuprates
J. Maly, D. Z. Liu, K. Levin
We discuss the allowed order parameter symmetries in multi-layer cuprates and their physical consequences using highly non-specific forms of the inter- and intra-plane interactions…