Two-Stage Kondo Effect in a Quantum Dot at a High Magnetic Field

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概要

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• We report a strong Kondo effect (Kondo temperature ∼4 K) at high magnetic field in a selective area growth semiconductor quantum dot. The Kondo effect is ascribed to a singlet-triplet transition in the ground state of the dot. At the transition, the low-temperature conductance approaches the unitary limit. Away from the transition, for low bias voltages and temperatures, the conductance is sharply reduced. The observed behavior is compared to predictions for a two-stage Kondo effect in quantum dots coupled to single-channel leads.

• American Physical Societyの論文
• 2002-03-25

著者

• Tarucha S

  Univ. Tokyo Tokyo Jpn

関連論文

• Two-Stage Kondo Effect in a Quantum Dot at a High Magnetic Field

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