120 citations · 675 across the 25 of their papers we have counts for
13 papers · 1 filter
Optimal Boson energy for superconductivity in the Holstein model
Chungwei Lin, Bingnan Wang, Koon Hoo Teo
We examine the superconducting solution in the Holstein model, where the conduction electrons couple to the dispersionless Boson fields, using the Migdal-Eliashberg theory and Dyna…
Quench dynamics of Anderson impurity model using configuration interaction method
Chungwei Lin, Alexander A. Demkov
We study the quench dynamics of an Anderson impurity model using the configuration interaction (CI) method. In particular, we focus on the relaxation behavior of the impurity occup…
Final-state effect on x-ray photoelectron spectrum of nominally and -doped transition metal oxides
Chungwei Lin, Agham Posadas, Tobias Hadamek +1
We investigate the x-ray photoelectron spectroscopy (XPS) of nominally and -doped transition metal oxides including NbO, SrVO, and LaTiO (nominally …
Electron Correlation in Oxygen Vacancy in SrTiO
Chungwei Lin, Alexander A. Demkov
Oxygen vacancies are an important type of defect in transition metal oxides. In SrTiO they are believed to be the main donors in an otherwise intrinsic crystal. At the same tim…
Efficient variational approach to the impurity problem and its application to the dynamical mean-field theory
Chungwei Lin, Alexander A. Demkov
Within the framework of exact diagonalization (ED), we compute the ground state of Anderson impurity problem using the variational approach based on the configuration interaction (…
The metal insulator transition in cluster dynamical mean field theory: intersite correlation, cluster size, interaction strength, and the location of the transition line
Chungwei Lin, Andrew J. Millis
To gain insight into the physics of the metal insulator transition and the effectiveness of cluster dynamical mean field theory (DMFT) we have used one, two and four site dynamical…