Fig. 4: Tunable Luttinger liquid behaviors. | Nature Communications

Fig. 4: Tunable Luttinger liquid behaviors.

From: A robust and tunable Luttinger liquid in correlated edge of transition-metal second-order topological insulator Ta2Pd3Te5

Fig. 4

a dI/dV versus VDC measured in device #A4 at differential T with Vbg = 0 V. b The dI/dV(VDC) curves without edge gap behavior in (a) (from T = 12.9 K to 39.8 K) are plotted as scaled conductance (dI/dV)/T0.69 versus scaled temperature eVDC/kBT. All data collapses to a single curve indicating Luttinger liquid behaviors. (dI/dV(VDC) curves below T = 12.9 K exhibit edge gap behavior due to the 2D SOTI nature, so they should not obey the scaling behavior physically.) c, Gate tunable α in Luttinger liquid behaviors in dI/dV v.s. VDC curves. The error bars reflect the uncertainty due to measurement noise (Raw data are included in Supplementary Fig. 12.).

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