Department of Physics, Ben-Gurion University, Beer Sheva 84105, Israel.
Phys Rev Lett. 2011 Oct 21;107(17):176802. doi: 10.1103/PhysRevLett.107.176802. Epub 2011 Oct 17.
Electron transport through a normal-metal-quantum-dot-topological-superconductor junction is studied and reveals interlacing physics of Kondo correlations with two Majorana fermions bound states residing on the opposite ends of the topological superconductor. When the strength of the Majorana fermion coupling exceeds the temperature T, this combination of Kondo-Majorana fermion physics might be amenable for an experimental test: The usual peak of the temperature dependent zero bias conductance σ(V=0,T) splits and the conductance has a dip at T=0. The heights of the conductance side peaks decrease with magnetic field.
研究了通过正常金属-量子点-拓扑超导体结的电子输运,揭示了 Kondo 相关与束缚在拓扑超导体两端的两个 Majorana 费米子之间的交错物理。当 Majorana 费米子耦合强度超过温度 T 时,这种 Kondo-Majorana 费米子物理的组合可能适合进行实验测试:通常随温度变化的零偏置电导 σ(V=0,T)的峰值分裂,并且在 T=0 时电导出现凹陷。电导边峰的高度随磁场而减小。