52 citations · 170 across the 8 of their papers we have counts for
5 papers · 1 filter
Kondo Effect and Josephson Current through a Quantum Dot between Two Superconductors
Mahn-Soo Choi, Minchul Lee, Kicheon Kang +1
We investigate the supercurrent through a quantum dot for the whole range of couplings using the numerical renormalization group method. We find that the Josephson current switches…
Quantum Dissipative Dynamics of the Magnetic Resonance Force Microscope in the Single-Spin Detection Limit
Hanno Gassmann, Mahn-Soo Choi, Hangmo Yi +1
We study a model of a magnetic resonance force microscope (MRFM) based on the cyclic adiabatic inversion technique as a high-resolution tool to detect single electron spins. We inv…
Coulomb Blockade and Kondo Effect in a Quantum Hall Antidot
H. -S. Sim, M. Kataoka, Hangmo Yi +3
We propose a general capacitive model for an antidot, which has two localized edge states with different spins in the quantum Hall regime. The capacitive coupling of localized exce…
Kondo effect in a quantum dot coupled to ferromagnetic leads: A numerical renormalization group analysis
Mahn-Soo Choi, David Sanchez, Rosa Lopez
We investigate the effects of spin-polarized leads on the Kondo physics of a quantum dot using the numerical renormalization group method. Our study demonstrates in an unambiguous…
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…