Floquet-Engineered Valleytronics in Dirac Systems

Physical Review Letters
Arijit KunduBabak Seradjeh

Abstract

Valley degrees of freedom offer a potential resource for quantum information processing if they can be effectively controlled. We discuss an optical approach to this problem in which intense light breaks electronic symmetries of a two-dimensional Dirac material. The resulting quasienergy structures may then differ for different valleys, so that the Floquet physics of the system can be exploited to produce highly polarized valley currents. This physics can be utilized to realize a valley valve whose behavior is determined optically. We propose a concrete way to achieve such valleytronics in graphene as well as in a simple model of an inversion-symmetry broken Dirac material. We study the effect numerically and demonstrate its robustness against moderate disorder and small deviations in optical parameters.

References

Oct 23, 2004·Science·K S NovoselovA A Firsov
Aug 8, 2008·Nature Nanotechnology·Xu DuEva Y Andrei
Oct 15, 2008·Physical Review Letters·K I BolotinP Kim
Jan 15, 2011·Physical Review Letters·Kin Fai MakTony F Heinz
Dec 21, 2011·Physical Review Letters·Zhenghao GuAssa Auerbach
Jun 8, 2012·Nature Communications·Ting CaoJi Feng
Jun 19, 2012·Nature Nanotechnology·Kin Fai MakTony F Heinz
Jun 19, 2012·Nature Nanotechnology·Hualing ZengXiaodong Cui
Jun 28, 2014·Science·K F MakP L McEuen
Oct 25, 2014·Science·R V GorbachevA K Geim
Dec 17, 2014·Nature Materials·Edbert J SieNuh Gedik
Dec 20, 2014·Physical Review Letters·Arijit KunduBabak Seradjeh
Jul 22, 2015·Physical Review Letters·Yuri D LenskyLeonid S Levitov

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Citations

Mar 11, 2017·Science·Edbert J SieNuh Gedik
Aug 19, 2017·Journal of Physics. Condensed Matter : an Institute of Physics Journal·HongYu Tian, Jun Wang
May 31, 2018·Journal of Physics. Condensed Matter : an Institute of Physics Journal·S K Firoz Islam
Sep 2, 2017·Scientific Reports·Juan Juan WangJun-Feng Liu
Jul 28, 2019·Physical Review Letters·F Nur ÜnalAndré Eckardt
Aug 8, 2018·Physical Review Letters·M Rodriguez-Vega, B Seradjeh
Jun 11, 2021·Physical Review Letters·Abhishek KumarBabak Seradjeh
Apr 28, 2020·The Journal of Physical Chemistry Letters·Huiying MuJianjun Liu

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