Transient current in spin blockade condition

نویسندگان

  • Takao Waho
  • Yasuhiro Tokura
  • Keiji Ono
  • Seigo Tarucha
چکیده

In series double quantum dot with finite bias, strong current suppression by spinselection rule is expected. Before the current becomes zero starting from a certain initial condition, the transient current flows through the system. We theoretically argue this excess current, under which condition, becomes a simple fraction of charge quantum after being integrated in time. We also propose a scheme to detect this excess current by periodically modulating bias and present the evidence of the fractional excess charge e/3.

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تاریخ انتشار 2009