52 citations · 294 across the 25 of their papers we have counts for
12 papers · 1 filter
Frustration-enhanced persistent currents in correlated trimer nanorings
Tie-Feng Fang, Wei-Tao Lu, Ai-Min Guo +1
We investigate the persistent current in a correlated trimer nanoring comprising of three magnetic atoms, which sits on a metallic host and encloses a magnetic flux. In the molecul…
Strongly correlated electrons in superconducting islands with fluctuating Cooper pairs
Tie-Feng Fang, Ai-Min Guo, Qing-Feng Sun
We present a particle-number conserving theory for many-body effects in mesoscopic superconducting islands connected to normal electrodes, which explicitly includes quantum fluctua…
Ferromagnetic induced Kondo effect in graphene with a magnetic impurity
Gao-Yang Li, Tie-Feng Fang, Ai-Min Guo +1
We investigate the many-body effects of a magnetic adatom in ferromagnetic graphene by using the numerical renormalization group method. The nontrivial band dispersion of ferromagn…
Nonequilibrium Kondo effect by equilibrium numerical renormalization group method: The hybrid Anderson model subject to a finite spin bias
Tie-Feng Fang, Ai-Min Guo, Qing-Feng Sun
We investigate Kondo correlations in a quantum dot with normal and superconducting electrodes, where a spin bias voltage is applied across the device and the local interaction …
Inelastic Kondo-Andreev tunnelings in a vibrating quantum dot
Zhan Cao, Tie-Feng Fang, Qing-Feng Sun +1
Phonon-assisted electronic tunnelings through a vibrating quantum dot embedded between normal and superconducting leads are studied in the Kondo regime. In such a hybrid device, wi…
Kondo screening of Andreev bound states in an N-QD-S system
Lin Li, Zhan Cao, Tie-Feng Fang +2
Motivated by experimental observation of the Kondo-enhanced Andreev transport [R. S. Deacon \textit{et al.}, PRB \textbf{81}, 121308(R) (2010)] in a hybrid normal metal-quantum dot…
Spin susceptibility of Anderson impurities in arbitrary conduction bands
Tie-Feng Fang, Ning-Hua Tong, Zhan Cao +2
Spin susceptibility of Anderson impurities is a key quantity in understanding the physics of Kondo screening. Traditional numerical renormalization group (NRG) calculation of the i…
Kondo Phase Transitions of Magnetic Impurities in Carbon Nanotubes
Tie-Feng Fang, Qing-feng Sun
We propose carbon nanotubes (CNTs) with magnetic impurities as a versatile platform to achieve unconventional Kondo physics, where the CNT bath is gapped by the spin-orbit interact…
Compensation effect in carbon nanotube quantum dots coupled to polarized electrodes in the presence of spin-orbit coupling
Lin Li, Yang-Yang Ni, Tie-Feng Fang +1
We study theoretically the Kondo effect in carbon nanotube quantum dot attached to polarized electrodes. Since both spin and orbit degrees of freedom are involved in such a system,…
Kondo effect of an adatom in graphene and its scanning tunneling spectroscopy
Lin Li, Yang-Yang Ni, Yin Zhong +2
We study the Kondo effect of a single magnetic adatom on the surface of graphene. It was shown that the unique linear dispersion relation near the Dirac points in graphene makes it…
Engineering the Kondo and Fano effects in double quantum dots
Tie-Feng Fang, Hong-Gang Luo
We demonstrate delicate control over the Kondo effect and its interplay with quantum interference in an Aharonov-Bohm interferometer containing one Kondo dot and one noninteracting…
Kondo effect in carbon nanotube quantum dots with spin-orbit coupling
Tie-Feng Fang, Wei Zuo, Hong-Gang Luo
Motivated by recent experimental observation of spin-orbit coupling in carbon nanotube quantum dots [F. Kuemmeth \textsl{et al.}, Nature (London) {\bf 452}, 448 (2008)], we investi…