Integrating suspended quantum dot circuits for applications in nanomechanics

被引：35

作者：

Kirschbaum, J

Höhberger, EM

Blick, RH

Wegscheider, W

Bichler, M

机构：

[1] Univ Munich, Ctr Nanosci, D-80539 Munich, Germany

[2] Univ Munich, Sekt Phys, D-80539 Munich, Germany

[3] Tech Univ Munich, Walter Schottky Inst, D-85747 Garching, Germany

来源：

APPLIED PHYSICS LETTERS | 2002年 / 81卷 / 02期

关键词：

D O I：

10.1063/1.1492302

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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 Angstrom/rootHz. (C) 2002 American Institute of Physics.

引用

页码：280 / 282

页数：3

共 14 条

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