Recently, a bulk nickelate superconductor La3Ni2O7 is discovered at pressures with a
remarkable high transition temperature T c∼ 80 K. Here, we study a Hubbard model with …

In the cuprates, one-dimensional (1D) chain compounds provide a distinctive opportunity to
understand the microscopic physics, owing to the availability of reliable theories. However …

The ground state and transport properties of the Lieb lattice flat band in the presence of an
attractive Hubbard interaction are considered. It is shown that the superfluid weight can be …

Upon do**, Mott insulators often exhibit symmetry breaking where charge carriers and
their spins organize into patterns known as stripes. For high–transition temperature cuprate …

High-temperature copper oxide superconductors consist of stacked CuO2 planes, with
electronic band structures and magnetic excitations that are primarily two-dimensional,, but …

Typical Wannier-function downfolding starts with a mean-field or density functional set of
bands to construct the Wannier functions. Here, we carry out a controlled approach, using …

We report on the nonlinear optical signatures of quantum phase transitions in the high-
temperature superconductor YBCO, observed through high harmonic generation. While the …

We study the ground state properties of the hole-doped three-band Hubbard (Emery) model,
describing the copper-oxygen planes of the cuprates, using large-scale two-dimensional …

Ultrafast lasers are an increasingly important tool to control and stabilize emergent phases
in quantum materials. Among a variety of possible excitation protocols, a particularly …

Recently, a bulk nickelate superconductor $\mathrm {La_3Ni_2O_7} $ is discovered at
pressures with a remarkable high transition temperature $ T_c\sim 80K $. Here, we study a …