2019/04/25 by Hiroshi Irie, Takafumi Akiho, Koji Muraki · 10 citations
Materials Science · Physics and Astronomy · #Advanced Materials and Semiconductor Technologies #Capacitance #Coincidence #Layer (electronics) #Magnetic field #Quantum and electron transport phenomena #Semiconductor Quantum Structures and Devices #Spectroscopy #Strain (injury) #Tensile strain #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.7567/1882-0786/ab1c7c
published in Applied Physics Express 12(6), 063004 (Institute of Physics) · 5 pages, 5 figures
openalex publication_date 2019/04/25 · openalex created_date 2019/05/03 · arxiv created 2020/05/19 · arxiv updated 2020/05/20 · openalex updated_date 2026/08/06
We determine the effective g -factor ( ) of a two-dimensional electron gas (2DEG) using a new method based on capacitance spectroscopy. The capacitance-voltage profile of a 2DEG in an InAs/AlGaSb quantum well measured in an in-plane magnetic field shows a double-step feature that indicates the Zeeman splitting of the subband edge. The method allows for simultaneous and independent determination of and effective mass . Data suggests that the biaxial tensile strain in the InAs layer has considerable impact on both and . Our method provides a means to determine that is complementary to the commonly used coincidence technique.