344 citations · 6.3k across the 155 of their papers we have counts for
7 papers · 1 filter
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…
Spin-current Seebeck effect in quantum dot systems
Zhi-Cheng Yang, Qing-Feng Sun, X. C. Xie
We first bring up the concept of spin-current Seebeck effect based on a recent experiment [Nat. Phys. {\bf 8}, 313 (2012)], and investigate the spin-current Seebeck effect in quant…
The spin-polarized state of graphene: a spin superconductor
Qing-feng Sun, X. C. Xie
We study the spin-polarized Landau-level state of graphene. Due to the electron-hole attractive interaction, electrons and holes can bound into pairs. These pairs can then co…
A controllable valley polarization in Graphene
Yang Liu, Juntao Song, Yuxian Li +2
The electron transport of different conical valleys is investigated in graphene with extended line-defects. Intriguingly, the electron with a definite incident angle can be complet…
One-dimensional quantum channel in a graphene line defect
Juntao Song, Haiwen Liu, Hua Jiang +2
Using a tight-binding model, we study a line defect in graphene where a bulk energy gap is opened by sublattice symmetry breaking. It is found that sublattice symmetry breaking may…
Josephson junction on one edge of a two dimensional topological insulator affected by magnetic impurity
Shu-feng Zhang, Wei Zhu, Qing-feng Sun
Current-phase relation in a Josephson junction formed by putting two s-wave superconductors on the same edge of a two dimensional topological insulator is investigated. We consider…
Detect Spinons via Spin Transport
Chui-Zhen Chen, Qing-feng Sun, Fa Wang +1
Existence of spinons is the defining property of quantum spin liquids. These exotic excitations have (fractionalized) spin quantum number and no electric charge, and have been prop…