26 citations · 201 across the 29 of their papers we have counts for
7 papers · 1 filter
Sondheimer Oscillation as a Fingerprint of Surface Dirac Fermions
Heon-Jung Kim, Ki-Seok Kim, Mun Dae Kim +7
Topological states of matter challenge the paradigm of symmetry breaking, characterized by gapless boundary modes and protected by the topological property of the ground state. Rec…
Superconductivity from purely repulsive interactions in the strong coupling approach : Application of the SU(2) slave-rotor theory to the Hubbard model
Ki-Seok Kim, Mun Dae Kim
We propose a mechanism of superconductivity from purely repulsive interactions in the strong coupling regime, where the BCS (Bardeen-Cooper-Schrieffer) mechanism such as the spin-f…
Kondo physics in the algebraic spin liquid
Ki-Seok Kim, Mun Dae Kim
We study Kondo physics in the algebraic spin liquid, recently proposed to describe [Phys. Rev. Lett. {\bf 98}, 117205 (2007)]. Although spin dynamics of th…
Spin-gapped incoherent metal with preformed pairing in the doped antiferromagnetic Mott insulator
Ki-Seok Kim, Mun Dae Kim
We investigate how the antiferromagnetic Mott insulator evolves into the d-wave BCS superconductor through hole doping. Allowing spin fluctuations in the strong coupling approach,…
Antiferromagnetic metal to heavy-fermion metal quantum phase transition in the Kondo lattice model: A strong coupling approach
Ki-Seok Kim, Mun Dae Kim
We study the quantum phase transition from an antiferromagnetic metal to a heavy fermion metal in the Kondo lattice model. Based on the strong coupling approach we {\it first} diag…
Mesoscopic Luttinger Liquid Theory in an Aharonov-Bohm Ring
Mun Dae Kim, Sam Young Cho, Chul Koo Kim +1
A careful study on the mesoscopic PC in a Luttinger liquid ring is carried out. It is shown that discreteness plays an important role in calculating the PC caused by the magnetic f…
Ferromagnetic Fixed Point of the Kondo Model in a Luttinger Liquid
Mun Dae Kim, Chul Koo Kim, Kyun Nahm +1
The Kondo effect in a Luttinger liquid is studied using the renormalization group method. By renormalizing the boson fields, scaling equations to the second order for an arbitrary…