Cooling low-dimensional electron systems into the microkelvin regime

• DOI: 10.1038/s41467-022-28222-x
• Publication Date: 2022-02-03T11:07:29Z
• Authors: Lev V. Levitin; Harriet van der V...; Terje Theisen; Stefanos Dimitriadis; Marijn Lucas; Antonio D. Corcoles; Ján Nyéki; Andrew J. Casey; Graham Creeth; Ian Farrer; David A. Ritchie; James T. Nicholls; John Saunders
• Keywords: Ohmic contact

Two-dimensional electron gases (2DEGs) with high mobility, engineered in semiconductor heterostructures host a variety of ordered phases arising from strong correlations, which emerge at sufficiently low temperatures. The 2DEG can be further controlled by surface gates to create quasi-one dimensional systems, potential spintronic applications. Here we address the long-standing challenge cooling such electrons below 1 mK, potentially important for identification topological and spin correlated states. device was immersed liquid