Herzog, Florian
[Author];
Heyn, Christian
[Author];
Hardtdegen, Hilde
[Author];
Schäpers, Thomas
[Author];
Wilde, Marc A.
[Author];
Grundler, Dirk
[Author]
Micromechanical measurement of beating patterns in the quantum oscillatory chemical potential of InGaAs quantum wells due to spin-orbit coupling
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Media type:
E-Article
Title:
Micromechanical measurement of beating patterns in the quantum oscillatory chemical potential of InGaAs quantum wells due to spin-orbit coupling
Contributor:
Herzog, Florian
[Author];
Heyn, Christian
[Author];
Hardtdegen, Hilde
[Author];
Schäpers, Thomas
[Author];
Wilde, Marc A.
[Author];
Grundler, Dirk
[Author]
Published:
American Inst. of Physics, 2015
Published in:Applied physics letters 107(9), 092101 - (2015). doi:10.1063/1.4929840
Language:
English
DOI:
https://doi.org/10.1063/1.4929840
ISSN:
0003-6951;
1077-3118
Origination:
Footnote:
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Description:
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.