5 papers
Anisotropic Localization Effect in Layered Materials
Y. Zha, D. Z. Liu
We investigate localization properties in the highly anisotropic and intrinsically disordered layered material, which is analogous to high-Tc cuprates. By varying the anisotropy of…
Localization in Semiconductor Quantum Wire Nanostructures
Dongzi Liu, S. Das Sarma
Localization properties of quasi-one dimensional quantum wire nanostructures are investigated using the transfer matrix-Lyapunov exponent technique. We calculate the localization l…
Scaling Behavior of the Activated Conductivity in a Quantum Hall Liquid
S. Das Sarma, Dongzi Liu
We propose a scaling model for the universal longitudinal conductivity near the mobility edge for the integer quantum Hall liquid. We fit our model with available experimental data…
Universal Scaling of Strong-Field Localization in an Integer Quantum Hall Liquid
Dongzi Liu, S. Das Sarma
We study the Landau level localization and scaling properties of a disordered two-dimensional electron gas in the presence of a strong external magnetic field. The impurities are t…
Theory of Photoluminescence from a Magnetic Field Induced Two-dimensional Quantum Wigner Crystal
Dong-Zi Liu, H. A. Fertig, S. Das Sarma
We develop a theory of photoluminescence using a time-dependent Hartree-Fock approximation that is appropriate for the two-dimensional Wigner crystal in a strong magnetic field. Th…