Kirschbaum, J. and Höhberger, E. M. and Blick, Robert H. and Wegscheider, Werner and Bichler, Max
Integrating suspended quantum dot circuits for applications in nanomechanics.
Applied Physics Letters 81 (2), pp. 280-282.
We present an integrated nanoelectromechanical circuit designed for achieving ultrasensitive displacement detection. It consists of a suspended quantum dot defined in the two-dimensional electron system of an AlGaAs/GaAs heterostructure and a mechanical resonator located in close vicinity. Operation of the individual components is demonstrated: Mechanical as well as transport properties of the resonator and the electron system are specified, respectively. Coulomb blockade in a freely suspended quantum dot is revealed. The data are used to estimate the maximum displacement sensitivity of the device to be 0.029 Å/sqrt(Hz).
|Date:||6 July 2002|
|Institutions:|| Physics > Institute of Experimental and Applied Physics > Retired Professors > Group Werner Wegscheider|
|85.85.+j; 07.07.Df; 07.10.Cm; 73.23.Hk; 06.30.Bp; ||PACS|
|Keywords:||aluminium compounds, gallium arsenide, III-V semiconductors, semiconductor quantum dots, Coulomb blockade, displacement measurement, micromechanical resonators, microsensors |
|Subjects:||500 Science > 530 Physics|
|Created at the University of Regensburg:||Unknown|
|Deposited On:||07 Dec 2009 13:28|
|Last Modified:||20 Jul 2011 22:11|