Electrically Controllable Kondo Correlation in Spin-Orbit-Coupled Quantum Point Contacts

Luke W. Smith, Hong Bin Chen, Che Wei Chang, Chien Wei Wu, Shun Tsung Lo, Shih Hsiang Chao, I. Farrer, H. E. Beere, J. P. Griffiths, G. A.C. Jones, D. A. Ritchie, Yueh Nan Chen, Tse Ming Chen

研究成果: Article同行評審

5 引文 斯高帕斯(Scopus)


Integrating the Kondo correlation and spin-orbit interactions, each of which have individually offered unprecedented means to manipulate electron spins, in a controllable way can open up new possibilities for spintronics. We demonstrate electrical control of the Kondo correlation by coupling the bound spin to leads with tunable Rashba spin-orbit interactions, realized in semiconductor quantum point contacts. We observe a transition from single to double peak zero-bias anomalies in nonequilibrium transport - the manifestation of the Kondo effect - indicating a controlled Kondo spin reversal using only spin-orbit interactions. Universal scaling of the Kondo conductance is demonstrated, implying that the spin-orbit interactions could enhance the Kondo temperature. A theoretical model based on quantum master equations is also developed to calculate the nonequilibrium quantum transport.

期刊Physical review letters
出版狀態Published - 2022 1月 14

All Science Journal Classification (ASJC) codes

  • 物理與天文學 (全部)


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