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arXiv · 2201.08173

Double Fu-teleportation and anomalous Coulomb blockade in a Majorana-hosted superconducting island

Yiru Hao·Gu Zhang·Donghao Liu·Dong E. Liu
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Abstract

We study the temperature dependence of Coulomb Blockade peak conductance based on a Majorana-hosted superconducting island. In the low-temperature regime, we discover a coherent double Fu-teleportation (FT) process, where any independent tunneling process always involves two coherent FTs; and we also find an anomalous universal scaling behavior, which shows a transition from a [max(T,eV)]^6 to a [max(T,eV)]^3 conductance behavior as increasing energy scale. In the high-temperature regime, using the familiar rate equation method, we find that the conductance is proportional to the reciprocal of the temperature and shows a non-monotonic temperature-dependence. Both the anomalous power-law behavior and non-monotonic temperature-dependence can be distinguished from the conductance peak in the traditional Coulomb block, and therefore, serve as a hallmark for the non-local transport in the topological superconducting island.

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Yiru Hao, Gu Zhang, Donghao Liu, Dong E. Liu. 2022-01-20. Double Fu-teleportation and anomalous Coulomb blockade in a Majorana-hosted superconducting island. https://doi.org/10.1038/s41467-022-34437-9

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