Magnetic field control of the Franck-Condon coupling of few-electron quantum states

P. L. Stiller, A. Dirnaichner, D. R. Schmid, A. K. Huettel*

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

2 Sitaatiot (Scopus)
34 Lataukset (Pure)

Abstrakti

Suspended carbon nanotubes display at cryogenic temperatures a distinct interaction between the quantized longitudinal vibration of the macromolecule and its embedded quantum dot, visible via Franck-Condon conductance sidebands in transport spectroscopy. We present data on such sidebands at known absolute number N-el = 1 and N-el = 2 of conduction band electrons and, consequently, well-defined electronic ground and excited states in a clean nanotube device. The interaction evolves only at a finite axial magnetic field and displays a distinct magnetic-field dependence of the Franck-Condon coupling parameter, different for different electronic base states and indicating a valley dependence. Reshaping of the electronic wave function by the magnetic field is discussed as a possible cause of our observations; its impact is demonstrated in a model calculation reproducing the field-dependent coupling.

AlkuperäiskieliEnglanti
Artikkeli115408
Sivumäärä13
JulkaisuPhysical Review B
Vuosikerta102
Numero11
DOI - pysyväislinkit
TilaJulkaistu - 9 syysk. 2020
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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