Electric transport measurements on micro-structured CePt$_{2}$In$_{7}$ single crystals in a diamond anvil cell

We report Shubnikov--de Haas and resistivity measurements of CePt$_{2}$In$_{7}$ samples under hydrostatic pressures using a diamond anvil cell. CePt$_{2}$In$_{7}$ belongs to the Ce$_{m}M_{n}$In$_{3m+2n}$ heavy fermion family. Compared to the Ce$M$In$_{5}$ members of this group, the structure of CePt$_{2}$In$_{7}$ has a more two dimensional character, but also exhibits an antiferromagnetically ordered and a superconducting phase. Upon increasing pressure the AFM order is suppressed with the N\'{e}el temperature extrapolating to a quantum critical point. The fluctuations associated with the QCP are thought to stabilize the unconventional superconducting phase. To investigate the weight of the different scattering channels the anisotropy of the resistivity above the N\'{e}el temperature was measured for various applied pressures. Shubnikov--de Haas measurements were conducted to deduce the changes in the effective electron masses in the AFM and superconducting phases under applied hydrostatic pressure. To this end we developed a method to conduct four terminal resistance measurements on micro-structured samples inside a diamond anvil cell.