%0 Journal Article
%A Herzog, Florian
%A Heyn, Christian
%A Hardtdegen, Hilde
%A Schäpers, Thomas
%A Wilde, Marc A.
%A Grundler, Dirk
%T Micromechanical measurement of beating patterns in the quantum oscillatory chemical potential of InGaAs quantum wells due to spin-orbit coupling
%J Applied physics letters
%V 107
%N 9
%@ 1077-3118
%C Melville, NY
%I American Inst. of Physics
%M FZJ-2015-05544
%P 092101 -
%D 2015
%X The quantum oscillatory magnetization M(B) and chemical potential μ(B) of a two-dimensional (2D) electron system provide important and complementary information about its ground state energy at low temperature T. We developed a technique that provides both quantities in the same cool-down process via a decoupled static operation and resonant excitation of a micromechanical cantilever. On InGaAs/InP heterostructures, we observed beating patterns in both M(B) and μ(B) attributed to spin-orbit interaction. A significantly enhanced sensitivity in μ enabled us to extract Rashba and Dresselhaus parameters with high accuracy. The technique is powerful for detailed investigations on the electronic properties of 2D materials.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000360926200030
%R 10.1063/1.4929840
%U https://juser.fz-juelich.de/record/205057