Journal
PHYSICAL REVIEW LETTERS
Volume 128, Issue 7, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.128.076802
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Funding
- Natural Science Foundation of China [11974198, 12004040]
- Tsinghua University Initiative Scientific Research Program
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The paper discusses the Majorana search and proposes a method using a dissipative probe to generate electron-boson interaction. It shows distinct universal zero-bias conductance behaviors for different types of Andreev reflections compared to Majorana zero modes. Specific cases are studied to help identify subgap states in experiments and promote the identification of Majorana zero modes.
The Majorana search is caught up in an extensive debate about the false-positive signals from nontopological Andreev bound states. We introduce a remedy using the dissipative probe to generate electron-boson interaction. We theoretically show that the interaction-induced renormalization leads to significantly distinct universal zero-bias conductance behaviors, i.e., distinct characteristic power law in temperature, for different types of Andreev reflections, that show a sharp contrast to that of a Majorana zero mode. Various specific cases have been studied, including the cases in which two charges involved in an Andreev reflection process maintain or lose coherence, and the cases for multiple Andreev bound states with or without a Majorana. A transparent list of conductance features in each case is provided to help distinguish the observed subgap states in experiments, which also promotes the identification of Majorana zero modes.
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