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arXiv · 1009.2573

Piezoelectric rotator for studying quantum effects in semiconductor nanostructures at high magnetic fields and low temperatures

L. A. Yeoh·A. Srinivasan·T. P. Martin·O. Klochan·A. P. Micolich·A. R. Hamilton
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Abstract

We report the design and development of a piezoelectric sample rotation system, and its integration into an Oxford Instruments Kelvinox 100 dilution refrigerator, for orientation-dependent studies of quantum transport in semiconductor nanodevices at millikelvin temperatures in magnetic fields up to 10T. Our apparatus allows for continuous in situ rotation of a device through >100deg in two possible configurations. The first enables rotation of the field within the plane of the device, and the second allows the field to be rotated from in-plane to perpendicular to the device plane. An integrated angle sensor coupled with a closed-loop feedback system allows the device orientation to be known to within +/-0.03deg whilst maintaining the sample temperature below 100mK.

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L. A. Yeoh, A. Srinivasan, T. P. Martin, O. Klochan, A. P. Micolich, A. R. Hamilton. 2010-09-14. Piezoelectric rotator for studying quantum effects in semiconductor nanostructures at high magnetic fields and low temperatures. https://doi.org/10.1063/1.3502645

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