Journal Article

FZJ-2015-05008

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Switchable Coupling of Vibrations to Two-Electron Carbon-Nanotube Quantum Dot States

Weber, P. ; Calvo, H. L. ; Bohle, J. ; Goß, K. ; Meyer, C.FZJ* ; Wegewijs, M. R.FZJ* ; Stampfer, C. (Corresponding author)

2015
ACS Publ. Washington, DC

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Please use a persistent id in citations: http://hdl.handle.net/2128/22762  doi:10.1021/acs.nanolett.5b00765

Abstract: We report transport measurements on a quantum dot in a partly suspended carbon nanotube. Electrostatic tuning allows us to modify and even switch “on” and “off” the coupling to the quantized stretching vibration across several charge states. The magnetic-field dependence indicates that only the two-electron spin-triplet excited state couples to the mechanical motion, indicating mechanical coupling to both the valley degree of freedom and the exchange interaction, in contrast to standard models.

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Contributing Institute(s):

1. Theoretische Nanoelektronik (PGI-2)

Research Program(s):

1. 522 - Controlling Spin-Based Phenomena (POF3-522) (POF3-522)
2. 141 - Controlling Electron Charge-Based Phenomena (POF3-141) (POF3-141)

Appears in the scientific report 2015

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Database coverage:
; ; Current Contents - Physical, Chemical and Earth Sciences ; IF >= 10 ; JCR ; NCBI Molecular Biology Database ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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