Congjun Wu

collaborators

4 papers

cond-mat.mes-hall2008★ 171 cited

Orbital analogue of quantum anomalous Hall effect in $p$ -band systems

Congjun Wu

We investigate the topological insulating states of the $p$ -band systems in optical lattices induced by the onsite orbital angular momentum polarization, which exhibit gapless edge…

cond-mat.other2008★ 56 cited

Incommensurate superfluidity of bosons in a double-well optical lattice

Vladimir M. Stojanovic, Congjun Wu, W. Vincent Liu +1

We study bosons in the first excited Bloch band of a double-well optical lattice, recently realized at NIST. By calculating the relevant parameters from a realistic nonseparable la…

cond-mat.str-el2008★ 132 cited

Orbital ordering and frustration of $p$ -band Mott-insulators

Congjun Wu

We investigate the general structure of orbital exchange physics in Mott-insulating states of $p$ -orbital systems in optical lattices. Orbital orders occur in both the triangular a…

cond-mat.str-el2007★ 214 cited

The $p_{x, y}$ -orbital counterpart of graphene: cold atoms in the honeycomb optical lattice

Congjun Wu, S. Das Sarma

We study the ground state properties of the interacting spinless fermions in the $p_{x, y}$ -orbital bands in the two dimensional honeycomb optical lattice, which exhibit different n…

Orbital analogue of quantum anomalous Hall effect in p-band systems

Incommensurate superfluidity of bosons in a double-well optical lattice

Orbital ordering and frustration of p-band Mott-insulators

The px,y​-orbital counterpart of graphene: cold atoms in the honeycomb optical lattice

Orbital analogue of quantum anomalous Hall effect in $p$ -band systems

Orbital ordering and frustration of $p$ -band Mott-insulators

The $p_{x, y}$ -orbital counterpart of graphene: cold atoms in the honeycomb optical lattice