Abstract
We describe the construction of a low-temperature cryostat that may be used to study the time-dependent conductivity of low-dimensional semiconductors with time resolution of a few-hundred picoseconds. The system makes use of semirigid coaxial cables to provide the necessary connections from room-temperature instrumentation to the low-temperature stage, and features a specially designed launch that provides efficient 50 Ω impedance matching to the semiconductor system of interest. In order to explore the capabilities of the system, we perform time-resolved measurements of the magnetotransport properties of a high mobility GaAsAlGaAs two-dimensional electron gas.
Original language | English (US) |
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Article number | 113905 |
Pages (from-to) | 1-5 |
Number of pages | 5 |
Journal | Review of Scientific Instruments |
Volume | 76 |
Issue number | 11 |
DOIs | |
State | Published - 2005 |
ASJC Scopus subject areas
- Instrumentation