Figure 3: Comparison of clean and disordered Si samples.
From: Strongly correlated two-dimensional plasma explored from entropy measurements
Entropy per electron versus electron density in Si8-9 (filled symbols) and Si-UW2 (empty symbols) for three different temperatures (15 K—red colours, 6 K—grey colours, 3 K—blue colours). Theory expectation for ideal Fermi gas are shown by red dashed line(15 K), grey dotted line (6 K) and blue dash-dotted line(3 K). The inset shows real(black) and imaginary(red) components of capacitance taken at the ∂S/∂n measurement frequency for the clean sample Si-UW2 (solid lines) and disordered sample Si8-9 (dashed lines) respectively at 3 K.
