Year: 2025
Type: preprint
Abstract: Rectification of electromagnetic fields into direct current (DC) is pivotal for energy harvesting, wireless charging, and next-generation communication technologies. The superconducting diode effect, which exploits the nonreciprocal transport of dissipationless superconducting currents, offers ultra-low power consumption and high rectification ratios. Combining the superconducting diode effect with the AC Josephson effect holds promise for converting radio-frequency (rf) irradiation into a quantized DC output. However, experimental realization has been hindered by challenges in achieving the necessary symmetry breaking and fabricating high-performance Josephson junctions. Here we demonstrate the quantum rectification in kagome superconductor CsV3Sb5, which hosts emergent Josephson effects and a zero-field Josephson diode. Under rf irradiation, a DC voltage emerges without applied bias, scaling linearly with frequency as V = hf/2e, where h is Planck's constant, f is the microwave frequency, and e is the electron charge. Furthermore, the rectified voltage exhibits quantized steps with increasing rf power, consistent with Shapiro step quantization. Our work establishes CsV3Sb5 as a versatile platform for wireless quantum power supplies and charging, and underscores the intertwined order parameters as a promising pathway for precise quantum matter control.
Source: arXiv (Cornell University)
Authors: Lou, Han-Xin, Chen, Jing-Jing, Ye, Xing-Guo, Tan, Zhen-Bing, Wang, An-Qi, Yin, Qing, Liao, Xin, Fang, Jing-Zhi, Liu, Xing-Yu, He, Yi-Lin, Zhang, Zhen-Tao, Li, Chuan, Wei, Zhong-Ming, Ma, Xiu-Mei, Yu, Dapeng, Liao, Zhi-Min
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Awards: G5931473076, G8314615780
OpenAlex ID: W4416050738
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