6 papers
Phenomenological description of competing antiferromagnetism and d-wave superconductivity in high cuprates
Bumsoo Kyung, A. M. -S. Tremblay
In this paper the phase diagram of high cuprates is {\it qualitatively} studied in the context of competing orders: antiferromagnetism, d-wave superconductivity and -den…
Conjectures for the microscopic theory of high temperature superconductivity
Bumsoo Kyung
Based on experimental results and our previous theoretical work, a microscopic theory of high temperature superconductivity is conjectured. In this conjecture, superconducting and…
New interpretation of slave boson mean-field theory of the model: short-range antiferromagnetic and d-wave pairing correlations
Bumsoo Kyung
The Hamiltonian is studied in a mean-field approximation by taking into account antiferromagnetic and d-wave pairing correlations. Considering the presence of antiferromagnet…
Destruction of Strong Critical Spin Fluctuations by Doping in the 2D Hubbard Model
Bumsoo Kyung
We present the doping dependence of the spectral functions, density of states and low frequency behavior of the self-energy for the 2D Hubbard model on the basis of our recently de…
Band Kondo Effect in the Doped 2D Hubbard Model
Bumsoo Kyung
We present strong numerical evidence for the band Kondo effect in the doped 2D Hubbard model by showing the systematic change of the density of states, imaginary part of the self-e…
Formation of a Heavy-Fermion State in the 2D Periodic Anderson Model
Bumsoo Kyung
We study the formation of a heavy-fermion state in the 2D periodic Anerson model. For U=2, the density of states, imaginary part of the self-energy and effective magnetic moment al…