Cryogenic Transport Lab

We operate four advanced physical property measurement systems from Quantum Design. These PPMS units are capable of performing transport measurements across a wide temperature range from 2 K to 400 K and in presence of high magnetic field up to 14 Tesla. These systems are equipped with both in-plane and out-of-plane sample holders, allowing precise control over magnetic field geometry during measurements. Additional capabilities include (a) application of small AC magnetic fields during transport experiments, (b) high-frequency cable integration for performing ferromagnetic resonance (FMR) studies.

We use a MPMS 3 SQUID magnetometer from Quantum Design. The system has the sensitivity of a SQUID (Superconducting Quantum Interference Device) magnetometer and posseses multiple measurement modes such as AC susceptibility or vibrating sample magnetometry (VSM). 

In addition we house two cutting-edge dilution refrigerators from Bluefors, capable of reaching temperatures as low as 10 millikelvin, essential for exploring quantum phenomena at ultra low temperature. Each fridge is outfitted with 48/96 DC lines and RF lines for delivering both DC and high-frequency AC signals. Low-noise LNF amplifiers, circulators, and isolators on the readout lines, ensuring high-fidelity detection of AC responses. These facilities are crucial for probing the electronic transport properties of superconductors, investigating Josephson junction behavior, and conducting advanced quantum materials research under extreme cryogenic conditions.