TY  - JOUR
AU  - Herzog, Florian
AU  - Heyn, Christian
AU  - Hardtdegen, Hilde
AU  - Schäpers, Thomas
AU  - Wilde, Marc A.
AU  - Grundler, Dirk
TI  - Micromechanical measurement of beating patterns in the quantum oscillatory chemical potential of InGaAs quantum wells due to spin-orbit coupling
JO  - Applied physics letters
VL  - 107
IS  - 9
SN  - 1077-3118
CY  - Melville, NY
PB  - American Inst. of Physics
M1  - FZJ-2015-05544
SP  - 092101 -
PY  - 2015
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000360926200030
DO  - DOI:10.1063/1.4929840
UR  - https://juser.fz-juelich.de/record/205057
ER  -