Kondo-free mirages in elliptical quantum corrals

Qili Li, Xiaoxia Li, Bingfeng Miao, Liang Sun, Gong Chen, Ping Han and Haifeng Ding ()
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Qili Li: Nanjing University
Xiaoxia Li: Nanjing University
Bingfeng Miao: Nanjing University
Liang Sun: Nanjing University
Gong Chen: Nanjing University
Ping Han: Collaborative Innovation Center of Advanced Microstructures
Haifeng Ding: Nanjing University

Nature Communications, 2020, vol. 11, issue 1, 1-8

Abstract: Abstract The quantum mirage effect is a fascinating phenomenon in fundamental physics. Landmark experiments on quantum mirages reveal atomic-scale transport of information with potential to remotely probe atoms or molecules with minimal perturbation. Previous experimental investigations are Kondo-effect based; the quantum mirages appear only near the Fermi energy. This strongly limits the exploration of the mechanism and potential application. Here we demonstrate a Kondo-free quantum mirage that operates in a wide energy range beyond Fermi energy. Together with an analytical model, our systematic investigations identify that the quantum mirage is the result of quantum interference of the onsite electronic states with those scattered by the adatom at the focus of elliptical quantum corrals, where two kinds of scattering paths are of critical importance. Moreover, we also demonstrate the manipulation of quantum mirages with pseudo basic logic operations, such as NOT, FANOUT and OR gates.

Date: 2020
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DOI: 10.1038/s41467-020-15137-8

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