Thermal gating of charge currents with Coulomb coupled quantum dots
Zitieren Sie bitte immer diese URN: urn:nbn:de:bvb:20-opus-145196
- 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.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.…
Autor(en): | H Thierschmann, F Arnold, M Mittermüller, L Maier, C Heyn, W Hansen, H Buhmann, L W Molenkamp |
---|---|
URN: | urn:nbn:de:bvb:20-opus-145196 |
Dokumentart: | Artikel / Aufsatz in einer Zeitschrift |
Institute der Universität: | Fakultät für Physik und Astronomie / Physikalisches Institut |
Sprache der Veröffentlichung: | Englisch |
Titel des übergeordneten Werkes / der Zeitschrift (Englisch): | New Journal of Physics |
Erscheinungsjahr: | 2015 |
Band / Jahrgang: | 17 |
Heft / Ausgabe: | 113003 |
Originalveröffentlichung / Quelle: | New Journal of Physics 17:113003 (2015). DOI: 10.1088/1367-2630/17/11/113003 |
DOI: | https://doi.org/10.1088/1367-2630/17/11/113003 |
Allgemeine fachliche Zuordnung (DDC-Klassifikation): | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Freie Schlagwort(e): | Coulomb interaction; energy; oscillations; physics; quantum dot systems; thermal gating; thermoelectrics; thermopower; three terminal device |
Datum der Freischaltung: | 06.11.2018 |
Lizenz (Deutsch): | CC BY: Creative-Commons-Lizenz: Namensnennung |