Integrated Electronic Transport and Thermometry at milliKelvin Temperatures and in Strong Magnetic Fields

Details Integrated Electronic Transport and Thermometry at milliKelvin Temperatures and in Strong Magnetic Fields Integrated Electronic Transport and Thermometry at milliKelvin Temperatures and in Strong Magnetic Fields

2011-05-12

arxiv.org/abs/1105.2350v1

published in Rev. Sci. Instrum. 82, 053902 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

We fabricated a He-3 immersion cell for transport measurements of semiconductor nanostructures at ultra low temperatures and in strong magnetic fields. We have a new scheme of field-independent thermometry based on quartz tuning fork Helium-3 viscometry which monitors the local temperature of the sample's environment in real time. The operation and measurement circuitry of the quartz viscometer is described in detail. We provide evidence that the temperature of two-dimensional electron gas confined to a GaAs quantum well follows the temperature of the quartz viscometer down to 4mK.

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