Thermal gating of charge currents with Coulomb coupled quantum dots

H. Thierschmann, F Arnold, Marcel Mittermüller, L Maier, Christian Heyn, W Hansen, H Buhmann, Laurens W. Molenkamp

Research output: Contribution to journalArticleScientificpeer-review

19 Citations (Scopus)
15 Downloads (Pure)

Abstract

We have observed thermal gating, i.e. electrostatic gating induced by hot electrons. The effect occurs in a device consisting of two capacitively coupled quantum dots. The double dot system is coupled to a hot electron reservoir on one side (QD1), while the conductance of the second dot (QD2) is monitored. When a bias across QD2 is applied we observe a current which is strongly dependent on the temperature of the heat reservoir. This current can be either enhanced or suppressed, depending on the relative energetic alignment of the QD levels. Thus, the system can be used to control a charge current by hot electrons.

Original languageEnglish
Article number113003
JournalNew Journal of Physics
Volume17
Issue number11
DOIs
Publication statusPublished - 26 Oct 2015

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