52 citations · 294 across the 25 of their papers we have counts for
26 papers
Self-lensing of electromagnetic counterparts to extreme mass ratio inspirals
Ruwen Zhou, Zhen Pan
Extreme mass ratio inspirals on inclined orbits can produce recurrent electromagnetic flares by shocking gas at accretion-disk crossings. Using forward ray tracing in Kerr spacetim…
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…
Antiferromagnetic superlattices: anisotropic band and spin-valley valve in buckled two-dimensional materials
Wei-Tao Lu, Tie-Feng Fang, Qing-Feng Sun
Antiferromagnetic superlattices (AFSL) are proposed based on the buckled hexagonal two-dimensional materials, which can be realized by the proximity effect of the periodically depo…
Superconducting lens and Josephson effect in AA-stacked bilayer graphene
Wei-Tao Lu, Tie-Feng Fang, Qing-Feng Sun
We study the superconducting transport phenomena, involving lensing effect and supercurrent in AA-stacked bilayer graphene, which is characterized by a linear gapless band with two…
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…
Topologically nontrivial and trivial zero modes in chiral molecules
Xiao-Feng Chen, Wenchen Luo, Tie-Feng Fang +4
Recently, electron transport along chiral molecules has been attracting extensive interest and several intriguing phenomena have been reported in recent experiments, such as the em…
Resonant tunneling in disordered borophene nanoribbons with line defects
Pei-Jia Hu, Si-Xian Wang, Xiao-Feng Chen +5
Very recently, borophene has been attracting extensive and ongoing interest as the new wonder material with structural polymorphism and superior attributes, showing that the struct…
Charge transport in a multi-terminal DNA tetrahedron: Interplay among contact position, disorder, and base-pair mismatch
Pei-Jia Hu, Si-Xian Wang, Xiao-Feng Chen +4
As a secondary structure of DNA, DNA tetrahedra exhibit intriguing charge transport phenomena and provide a promising platform for wide applications like biosensors, as shown in re…
Spin-dependent electron transport along hairpin-like DNA molecules
Pei-Jia Hu, Si-Xian Wang, Xiao-Hui Gao +4
The chirality-induced spin selectivity (CISS), demonstrated in diverse chiral molecules by numerous experimental and theoretical groups, has been attracting extensive and ongoing i…
Topological phase transitions of Thouless charge pumping realized in helical organic molecules with long-range hoppings
Ai-Min Guo, Pei-Jia Hu, Xiao-Hui Gao +2
Recent studies indicated that helical organic molecules, such as DNA and -helical protein, can behave as Thouless quantum pumps when a rotating electric field is applied perpend…
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…
Enhancement of electron transport and bandgap opening in graphene induced by adsorbates
Lan Chen, Fangping Ouyang, Songshan Ma +3
Impurities are unavoidable during the preparation of graphene samples and play an important role in graphene's electronic properties when they are adsorbed on graphene surface. In…
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 …
Thermoelectric unipolar spin battery in a suspended carbon nanotube
Zhan Cao, Tie-Feng Fang, Wan-Xiu He +1
A quantum dot formed in a suspended carbon nanotube exposed to an external magnetic field is predicted to act as a thermoelectric unipolar spin battery which generates pure spin cu…
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…
Thermoelectric-induced unitary Cooper pair splitting efficiency
Zhan Cao, Tie-Feng Fang, Lin Li +1
Thermoelectric effect is exploited to optimize the Cooper pair splitting efficiency in a Y-shaped junction, which consists of two normal leads coupled to an -wave superconductor…
Currents and current correlations in a topological superconducting nanowire beam splitter
Zhan Cao, Tie-Feng Fang, Qiao Chen +1
A beam splitter consisting of two normal leads coupled to one end of a topological superconducting nanowire via double quantum dot is investigated. In this geometry, the linear cur…
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…
Detection of Majorana bound states by thermodynamically stable -periodic D.C. Josephson current
Zhan Cao, Tie-Feng Fang, Hong-Gang Luo
We propose a scheme to detect the Majorana bound states (MBSs) by a thermodynamically stable D.C. Josephson current with -periodicity in the superconducting phase difference, w…
Bipolaronic blockade effect in quantum dots with negative charging energy
Tie-Feng Fang, Shu-Feng Zhang, Chun-Jiang Niu +1
We investigate single-electron transport through quantum dots with negative charging energy induced by a polaronic energy shift. For weak dot-lead tunnel couplings, we demonstrate…
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…