Coulomb-dominated oscillations in a graphene quantum Hall Fabry–Pérot interferometer<xref rid="cpb_28_12_127203fn1" ref-type="fn">*</xref><fn id="cpb_28_12_127203fn1"><label>*</label><p>Project supported by the National Key Research and Development Program of China (Grant Nos. 2016YFA0300601 and 2017YFA0303304), the National Natural Science Foundation of China (Grant Nos. 11874071, 11774005, and 11974026), and Beijing Academy of Quantum Information Sciences, China (Grant No. Y18G22).</p></fn>

Coulomb-dominated oscillations in a graphene quantum Hall Fabry–Pérot interferometer**

Project supported by the National Key Research and Development Program of China (Grant Nos. 2016YFA0300601 and 2017YFA0303304), the National Natural Science Foundation of China (Grant Nos. 11874071, 11774005, and 11974026), and Beijing Academy of Quantum Information Sciences, China (Grant No. Y18G22).

Zhang Guan-Qun¹, Lin Li², Peng Hailin², Liu Zhongfan², Kang Ning^{1, †}, Xu Hong-Qi^{1, 3, ‡}

(a) Diagonal resistance R_D (black curve) and Hall resistance R_XY (red curve) as a function of back gate voltage under perpendicular magnetic field B = 6 T with side gates L1 and L2 set to zero. Numbered horizontal lines indicate well developed quantum Hall plateaus. Orange (blue) shaded area corresponds to electron (hole) carriers. (b) Zoom in of the resistance oscillations in (a) (highlighted by the red arrow). ΔR_D is the measured R_D with the gross background subtracted, showing oscillations at near filling factor ν = −6. Inset: the FFT of the ΔR_D data which shows a sharp peak at a single frequency, demonstrating the oscillations are periodic in back gate voltage. (c) ΔR_D as a function of perpendicular magnetic field B around ν = −10 at V_BG = −12.5 V (denoted by the black arrow in (a)) with side gates L1 and L2 set to zero. Inset: the FFT results of the oscillations which shows a sharp peak at a single frequency, indicating the good periodicity in magnetic field.