118 citations · 559 across the 24 of their papers we have counts for
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Possibility of direct Mott insulator-to-superfluid transitions in weakly disordered boson systems
Sung Yong Park, Ji-Woo Lee, Min-Chul Cha +3
We study the zero-temperature phase transitions of a two-dimensional disordered boson Hubbard model at incommensurate boson densities. Via matrix diagonalization and quantum Monte…
Topological Defects, Orientational Order, and Depinning of the Electron Solid in a Random Potential
Min-Chul Cha, H. A. Fertig
We report on the results of molecular dynamics simulation (MD) studies of the classical two-dimensional electron crystal in the presence disorder. Our study is motivated by recent…
Orientational Order and Depinning of the Disordered Electron Solid
Min-Chul Cha, H. A. Fertig
We study the ground state of two-dimensional classical electron solids under the influence of modulation-doped impurities by using a simulated annealing molecular dynamics method.…
Universal conductivity in the boson Hubbard model in a magnetic field
Min-Chul Cha, S. M. Girvin
The universal conductivity at the zero-temperature superconductor-insulator transition of the two-dimensional boson Hubbard model is studied for cases both with and without magneti…