@article{cheng2014interplay,
author = {Cheng, Meng and Becker, Michael and Bauer, Bela and Lutchyn, Roman},
title = {Interplay between Kondo and Majorana interactions in quantum dots},
year = {2014},
month = {September},
abstract = {We study the properties of a quantum dot coupled to a topological superconductor and a normal lead and discuss the interplay between Kondo-and Majorana-induced couplings in quantum dots. The latter appears due to the presence of Majorana zero-energy modes localized, for example, at the ends of the onedimensional superconductor. We investigate the phase diagram of the system as a function of Kondo and Majorana interactions using a renormalization-group analysis, a slave-boson mean-field theory, and numerical simulations using the density-matrix renormalization-group method. We show that, in addition to the well-known Kondo fixed point, the system may flow to a new fixed point controlled by the Majoranainduced coupling, which is characterized by nontrivial correlations between a localized spin on the dot and the fermion parity of the topological superconductor and the normal lead. We compute several measurable quantities, such as differential tunneling conductance and impurity-spin susceptibility, which highlight some peculiar features characteristic to the Majorana fixed point},
publisher = {American Physical Society},
url = {http://approjects.co.za/?big=en-us/research/publication/interplay-kondo-majorana-interactions-quantum-dots/},
pages = {31051},
journal = {Physical Review X},
volume = {4},
chapter = {3},
}