94 citations · 121 across the 4 of their papers we have counts for
4 papers
Kondo Effects in Carbon Nanotubes: From SU(4) to SU(2) symmetry
Jong Soo Lim, Mahn-Soo Choi, M. Y. Choi +2
We study the Kondo effect in a single-electron transistor device realized in a single-wall carbon nanotube. The K-K' double orbital degeneracy of a nanotube, which originates from…
Quantum Phase Transitions and Persistent Currents in Josephson-Junction Ladders
Minchul Lee, Mahn-Soo Choi, M. Y. Choi
In this work we study quantum phase transitions and persistent currents in capacitively coupled one-dimensional Josephson-junction arrays. We will focus particularly on the roles o…
Spatiotemporal Stochastic Resonance in Fully Frustrated Josephson Ladders
Beom Jun Kim, Mahn-Soo Choi, Petter Minnhagen +3
We consider a Josephson-junction ladder in an external magnetic field with half flux quantum per plaquette. When driven by external currents, periodic in time and staggered in spac…
Quantum phase transitions in superconducting arrays under external magnetic fields
Beom Jun Kim, Gun Sang Jeon, M. -S. Choi +1
We study the zero-temperature phase transitions of two-dimensional superconducting arrays with both the self- and the junction capacitances in the presence of external magnetic fie…