4 papers · 1 filter
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…
Kondo Effect in Carbon Nanotube Single-Electron Transistors
Eugene H. Kim, German Sierra, C. Kallin
Recently, Coulomb blockade physics was observed at room temperature in a carbon nanotube single-electron transistor (H. W. Ch. Postma, et. al., Science 293, 76 (2001)). In this wor…
Kondo Effect in Quantum Dots Coupled to Luttinger Liquid Leads
Eugene H. Kim
We consider the Kondo effect in quantum dots coupled to Luttinger liquid leads, focussing on the case of repulsive interactions and spin SU(2) symmetry in the leads. We find that t…
From the Hubbard to the SO(5) Ladder: A Numerical Study
Daniel Duffy, Stephan Haas, Eugene Kim
The Hubbard Hamiltonian on a two-leg ladder is studied numerically using quantum Monte Carlo and Exact Diagonalization techniques. A rung interaction, , is turned on such that t…