Artículos de revistas
Switchable coupling of vibrations to two-electron carbon-nanotube quantum dot states
Fecha
2015-07Registro en:
Weber, P.; Calvo, Hernan Laureano; Bohle, J.; Goß, K.; Meyer, C.; et al.; Switchable coupling of vibrations to two-electron carbon-nanotube quantum dot states; American Chemical Society; Nano Letters; 15; 7; 7-2015; 4417-4422
1530-6984
1530-6992
CONICET Digital
CONICET
Autor
Weber, P.
Calvo, Hernan Laureano
Bohle, J.
Goß, K.
Meyer, C.
Wegewijs, M. R.
Stampfer, C.
Resumen
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" he 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.