5 papers
Discovery of parity-violating chiral polar-nematic charge density wave and superconductivity in kagome metals
Xingwei Shi, Geng Li, Zhan Wang +16
Nonmagnetic kagome metals and superconductors AV3Sb5 (A = K, Rb, Cs) host unconventional charge density wave (CDW) and superconducting (SC) phases accompanied by multiple electroni…
Laughlin pumping assisted by surface acoustic waves
Renfei Wang, Xiao Liu, Adbhut Gupta +8
The quantum Hall effect is a fascinating electrical transport phenomenon signified by precise quantization of Hall conductivity and vanishing longitudinal conductiv…
Anomalous acousto-current within the quantum Hall plateaus
Renfei Wang, Xiao Liu, Mengmeng Wu +7
We systematically study the acousto-current of two-dimensional electron systems in the integer and fractional quantum Hall regimes using surface acoustic waves. We are able to sepa…
Interaction between Surface Acoustic Wave and Quantum Hall Effects
Xiao Liu, Mengmeng Wu, Renfei Wang +6
Surface Acoustic Wave (SAW) is a powerful technique for investigating quantum phases appearing in two-dimensional electron systems. The electrons respond to the piezoelectric field…
A high-performance surface acoustic wave sensing technique
Mengmeng Wu, Xiao Liu, Renfei Wang +2
We present a superheterodyne-scheme demodulation system which can detect the amplitude and phaseshift of weak radio-frequency signals with extraordinarily high stability and resolu…