[22p-B102-1~10] Revisiting semiconductor light-emitting materials and optical characterization by unique spectroscopic approaches

[22p-B102-9] Quantum Hall systems studied by real-space and time spectroscopy

〇Go Yusa¹ (1.Tohoku Univ.)

Keywords:semiconductor, Quantum Hall, Spectroscopy

Two-dimensional electrons (2DEG) in a semiconductor subjected to a high magnetic field, i.e. quantum Hall systems, have been studied for several decades. Recently, QH systems have attracted renewed interests because of their topological nature. From the fundamental physics point of view, anyon and non-abelian statistics and application to quantum cosmology simulators are noteworthy. In this presentation, I focus on real-space and -time spectroscopy measurement techniques to study QH systems in a semiconductor. These entail ultrafast spectroscopy and microscopy in a high magnetic field (~10 T) and low temperature (~40 mK).