|Author||Herzog, Florian ♦ Wilde, Marc A. ♦ Heyn, Christian ♦ Hardtdegen, Hilde ♦ Schäpers, Thomas ♦ Grundler, Dirk|
|Source||United States Department of Energy Office of Scientific and Technical Information|
|Subject Keyword||CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ ACCURACY ♦ EXCITATION ♦ GALLIUM ARSENIDES ♦ GROUND STATES ♦ INDIUM ARSENIDES ♦ INDIUM PHOSPHIDES ♦ L-S COUPLING ♦ MAGNETIZATION ♦ MATERIALS ♦ POTENTIALS ♦ QUANTUM WELLS ♦ SENSITIVITY ♦ TWO-DIMENSIONAL SYSTEMS|
|Abstract||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.|
|Learning Resource Type||Article|
|Publisher Place||United States|
|Journal||Applied Physics Letters|
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