344 citations · 6.3k across the 155 of their papers we have counts for
5 papers · 1 filter
Gate-controllable spin-battery
Wen Long, Qing-feng Sun, Hong Guo +1
We propose a gate-controllable spin-battery for spin current. The spin-battery consists of a lateral double quantum dot under a uniform magnetic field. A finite DC spin-current is…
Anomalous Kondo effect of indirectly coupled double quantum dots
Qing-feng Sun, Hong Guo, Yupeng Wang
We report theoretical investigations of indirectly coupled double quantum dots (QD) side connected to an one-dimensional quantum wire. Due to quantum interference controlled by the…
ac Josephson effect in the resonant tunneling through mesoscopic superconducting junctions
Yu Zhu, Qing-feng Sun, Wei Li +2
We investigate ac Josephson effect in the resonant tunneling through mesoscopic superconducting junctions. In the presence of microwave irradiation, we show that the trajectory of…
Spin-current induced electric field
Qing-feng Sun, Hong Guo, Jian Wang
We theoretically predict that a pure steady state spin-current without charge-current can induce an electric field. A formula for the induced electric field is derived and we inves…
Writing Spin in a Quantum Dot with Ferromagnetic and Superconducting Electrodes
Yu Zhu, Qing-feng Sun, Tsung-han Lin
We propose an efficient mechanism for the operation of writing spin in a quantum dot, which is an ideal candidate for qubit. The idea is based on the Andreev reflection induced spi…