CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

Parametric excitation of dc current in a single-dot shuttle system via spontaneous symmetry breaking

Milton Eduardo Peña-Aza ; A. Scorrano ; Leonid Y. Gorelik (Institutionen för teknisk fysik, Kondenserade materiens teori)
Physical Review B (1098-0121). Vol. 88 (2013), 3, p. artikel nr 035412.
[Artikel, refereegranskad vetenskaplig]

We investigate theoretically the dynamics of a spatially symmetric shuttle system subjected to an ac gate voltage. We demonstrate that in such a system parametric excitation gives rise to mechanical vibrations when the frequency of the ac signal is close to the eigenfrequency of the mechanical subsystem. These mechanical oscillations result in a dc shuttle current in a certain direction due to spontaneous symmetry breaking. The direction of the current is determined by the phase shift between the ac gate voltage and the parametrically excited mechanical oscillations. The dependence of the shuttle current on the dc gate voltage is also analyzed.

Nyckelord: charge shuttle, transistor, transport



Denna post skapades 2013-08-13. Senast ändrad 2014-10-23.
CPL Pubid: 181266

 

Läs direkt!

Lokal fulltext (fritt tillgänglig)

Länk till annan sajt (kan kräva inloggning)


Institutioner (Chalmers)

Institutionen för fysik (GU) (GU)
Institutionen för teknisk fysik, Kondenserade materiens teori (1900-2015)

Ämnesområden

Den kondenserade materiens fysik

Chalmers infrastruktur