Fig. 4: Spatial LDOS modulations in Fe1−xSe regions with x = 3.2% and 6.35%. | Nature Communications

Fig. 4: Spatial LDOS modulations in Fe1−xSe regions with x = 3.2% and 6.35%.

From: Charge order driven by multiple-Q spin fluctuations in heavily electron-doped iron selenide superconductors

Fig. 4

a, b Atomically resolved topographic image and corresponding dI/dV map at E = 40 meV for an Fe1-xSe region with x = 3.2%. Measurement conditions for a: Vb = 40 mV, It = 50 pA and b: Vb = 40 mV, It = 50 pA, ΔV = 2 mV. c The enlarged image of the area marked by the yellow box in (b). The black box shows the unit cell of the charge order with a 2aFe period. d Spatial LDOS profiles taken along cut #5 in (c). e, f Atomically resolved topographic image and corresponding dI/dV map at E = 20 meV for an Fe1−xSe region with x = 6.35%. Measurement conditions for e: Vb = 100 mV, It = 50 pA and f: Vb = 100 mV, It = 50 pA, ΔV = 10 mV. g The enlarged image of the area marked by the yellow box in (f). The black box shows the unit cell of the charge order with a 2aFe period. h Spatial LDOS profiles taken along cut #6 in (g).

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