X-ray techniques have been used for more than a century to study the atomic and electronic
structure in practically any type of material. The advent of correlated electron systems, in …

Using both two orbital and five orbital models, we investigate the quasiparticle interference
(QPI) patterns in the superconducting (SC) state of iron-based superconductors. We …

We show that the d-wave ordering in particle-hole channels, dubbed d-wave checkerboard
order, possesses important physics that can sufficiently explain the scanning tunneling …

The competing orders in the particle-particle (PP) channel and the particle-hole (PH)
channel have been proposed separately to explain the pseudogap physics in cuprates. By …

The high-T c cuprates have a complex phase diagram with many competing phases. We
propose a bosonic effective quantum Hamiltonian based on the projected SO (5) model with …

The purpose of this thesis is the theoretical study of the high temperature superconductors.
Among many high temperature superconducting materials, the study is focused on the …

The high T c cuprates have a complex phase diagram with many competing phases. We
propose a bosonic effective quantum Hamiltonian based on the projected SO (5) model with …

The competing orders in the particle-particle (PP) channel and the particle-hole (PH)
channel have been proposed separately to explain the pseudogap physics in cuprates. By …