Terahertz subcycle control of charge, spin & pseudospin

S. Schlauderer, C. Schmid, F. Langer, C. Lange, S. Koch, M. Kira, A. Kimel, R. Mikhaylovskiy, J. Reimann, J. Güdde, U. Höfer, R. Huber
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Abstract

Utilizing the carrier wave of terahertz pulses, we drive all-ballistic Dirac currents on topological insulators and control the valley pseudospin in monolayer WSe2. Antenna-enhanced single-cycle terahertz pulses ballistically switch the antiferromagnetic spin order in TmFeO3.
太赫兹子周期控制的电荷、自旋和伪自旋
利用太赫兹脉冲的载波驱动拓扑绝缘体上的全弹道狄拉克电流,并控制单层WSe2的谷伪自旋。天线增强的单周期太赫兹脉冲在弹道上改变了TmFeO3的反铁磁自旋顺序。
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