Micromechanical cantilever magnetometer with an integrated two-dimensional electron system

We have realized a micromechanical cantilever magnetometer with an integrated two-dimensional electron system (2DES) in an AlGaAs/GaAs heterostructuregrown by molecular-beam epitaxy(MBE). The cantilever was defined by lithography and wet-etched selectively to a MBE-grown stop layer. We reach a sensitivity of 10 −13 J/T, which enables us to study the de Haas–van Alphen effect in a 2DES of only 0.04 cm 2 area. We demonstrate that, at low temperature, the oscillation amplitude at even filling factors is enhanced by a factor of up to 1.8 with respect to the single-particle value.


Published in:
Applied Physics Letters, 76, 24, 3564
Year:
2000
Publisher:
American Institute of Physics
ISSN:
0003-6951
Laboratories:




 Record created 2015-07-08, last modified 2018-03-17


Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)