期刊
PHYSICAL REVIEW B
卷 91, 期 8, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.91.081405
关键词
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资金
- NSF [1066293]
- Direct For Mathematical & Physical Scien
- Division Of Physics [1066293] Funding Source: National Science Foundation
We consider a quantum dot coupled to a topological superconductor and two normal leads and study the transport properties of the system. Using a Keldysh path-integral approach, we study current fluctuations (shot noise) within the low-energy effective theory. We argue that the combination of the tunneling conductance and the shot noise through a quantum dot allows one to distinguish between the topological (Majorana) and nontopological (e.g., Kondo) origin of the zero-bias conduction peak. Specifically, we show that, while the tunneling conductance might exhibit a zero-bias anomaly due to Majorana or Kondo physics, the shot noise is qualitatively different in the presence of Majorana zero modes.
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