2012/11/28 by Matthew Pelliccione, M. Pelliccione, A. Sciambi +7
Physics and Astronomy · #Cryocooler #Cryogenics #Cryostat #Dilution refrigerator #Electron #Mesoscopic physics #Pulse tube refrigerator #Quantum and electron transport phenomena #Quantum, superfluid, helium dynamics #Scanning electron microscope #Scanning probe microscopy #Superconducting and THz Device Technology #cond-mat.mes-hall #physics.ins-det
paper · pdf · doi:10.1063/1.4794767
published as Rev. Sci. Instrum. 84, 033703 (2013) · 29 pages, 10 figures
arxiv created 2012/11/28 · openalex publication_date 2013/03/01 · arxiv updated 2014/09/09 · openalex created_date 2019/06/27 · openalex updated_date 2026/08/05
We report on our design of a scanning gate microscope housed in a cryogen-free dilution refrigerator with a base temperature of 15 mK. The recent increase in efficiency of pulse tube cryocoolers has made cryogen-free systems popular in recent years. However, this new style of cryostat presents challenges for performing scanning probe measurements, mainly as a result of the vibrations introduced by the cryocooler. We demonstrate scanning with root-mean-square vibrations of 0.8 nm at 3 K and 2.1 nm at 15 mK in a 1 kHz bandwidth with our design. Using Coulomb blockade thermometry on a GaAs/AlGaAs gate-defined quantum dot, we demonstrate an electron temperature of 45 mK.