Transport Measurements
Application Examples
Transport Measurements
Application Examples
Angle-dependent Transport Measurements at 40 mK
Based on the smallest attocube rotator – ANR30 / LT- a rotation stage for angle-dependent transport measurements in magnetic fields up to 33 T and temperatures down to 40 mK was built at the user facility of the High Field Magnet Laboratory in Nijme gen( Netherlands). The mixing chamber of the commercially available dilution refrigerator from Leiden Cryogenics offers only a limited space of 17 mm in diameter.
U. Zeitler, High Field Magnet Laboratory, Nijmegen, Netherlands
Van der Waals Heterostructure under Rotation at 40 mK
An international collaboration( Berkeley, Stanford, Shanghai, Tsukuba, Seoul) reported signatures of tunable superconductivity in van der Waals heterostructures, detected via a sharp drop in the resistivity and a plateau in the I-V curve below 1 K. For in-plane measurements, the atto3DR double sample rotator was used, which conveniently allows for using the full field of a single solenoid in an arbitrary orientation.
G. Chen et al., Nature 572, 215( 2019)
Rotating Transport Measurement Setup at 25 mK
When designing a setup for mK applications material choice and thermalization are crucial. At Peking University( Beijing, China), Pengjie Wang from Xi Lin group has chosen the ULT version of the ANR101 positioner with resistive readout to realize their low-electron-temperature sample rotation system for transport measurements inside a dilution refrigerator. The deteced elelectron temperature in the setup was measured to be 25 mK.
P. Wang et al., Rev. Sci. Instrum. 90, 023905( 2019)