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在2到50K温度范围内测量了单层石墨烯量子霍尔平台与平台之间转变的标度律关系.发现石墨烯的标度律指数κ不是普适的,在低温段的κ大约是0.13,在高温段的κ大约是0.33.这一结果进一步验证了石墨烯中长程散射的主导地位.
The scaling relationship between the monolayer graphene quantum Hall platform and the platform was measured in the temperature range of 2 to 50 K. The scale law index κ of graphene was found to be not universal and the κ at low temperature was about 0.13 , Κ at high temperature is about 0.33. This result further validates the dominance of long-range scattering in graphene.