(Received 16 March 1999)

The time development of the Kondo effect is theoretically investigated by studying a quantum dot suddenly shifted into the Kondo regime by a change of voltage on a nearby gate. Using time-dependent versions of both the Anderson and Kondo Hamiltonians, it is shown that after a time t following the voltage shift, the form of the Kondo resonance matches the time-independent resonance at an effective temperature T_eff = T/tanh(pi Tt/2). Relevance of the buildup of the Kondo resonance to the transport current through a quantum dot is demonstrated. ©1999 The American Physical Society

PII: S0031-9007(99)09685-4
PACS: 72.15.Qm, 73.50.Mx, 85.30.Vw

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References

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