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Effect of Ring Exchange on Orbital Antiferromagnet
C. H. Chung, Hae-Young Kee, Yong Baek Kim
We study the effect of four-particle ring exchange process on orbital antiferromagnetic state that occurs in some correlated electron systems in two dimensions. The primary questio…
On the residual resistivity near a two dimensional metamagnetic quantum critical point
Yong Baek Kim, A. J. Millis
The behavior of the residual (impurity-dominated) resistivity is computed for a material near a two dimensional quantum critical point characterized by a divergent susceptibi…
Pseudogap Kondo Physics from Charge Fluctuations in a Quantum Dot
Eugene H. Kim, Yong Baek Kim, C. Kallin
We consider charge fluctuations in a quantum dot coupled to an interacting one-dimensional electron liquid. We find the behavior of this system to be similar to the multichannel ps…
Pairing Instability in a Nematic Fermi Liquid
Yong Baek Kim, Hae-Young Kee
Nematic Fermi liquid arises when the system of interacting fermions spontaneously breaks the rotational symmetry while the translational symmetry is preserved. We consider a Nemati…
"Quasiparticle Charge" in Superconductors: Effect of Mott Physics or Hidden Order Parameter ?
Hae-Young Kee, Yong Baek Kim
The renormalization factor, dubbed ``quasiparticle charge'' Z_e, of the coupling between the supercurrent and quasiparticles was analyzed in the context of high temperature cuprate…