| Andreev bound states in Kondo quantum dots coupled to superconducting leads |
November, 13 (2007) at 3pm Jong Soo Lim We have studied the Kondo quantum dot coupled to two superconducting leads and investigated the subgap Andreev states using the NRG method. Contrary to the recent NCA results, we observe Andreev states both below and above the Fermi level. In the framework of the slave-rotor theory, we also reexamine the system. |