Meanwhile, the sub-threshold swing (SS) shows a decreasing trend, ranging from ~10.1 V/dec to ~1.8 V/dec (the left axis in Figure 2 c), indicating that the Fermi surface of BP can be effectively regulated by gate voltage [ 23 , 24 ].
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Meanwhile, the sub-threshold swing (SS) shows a decreasing trend, ranging from ~10.1 V/dec to ~1.8 V/dec (the left axis in Figure 2 c), indicating that the Fermi surface of BP can be effectively regulated by gate voltage [ 23 , 24 ].