# Majorana dc Josephson current mediated by a quantum dot

@article{Xu2016MajoranaDJ, title={Majorana dc Josephson current mediated by a quantum dot}, author={Luting Xu and Xin-Qi Li and Qing-feng Sun}, journal={Journal of Physics: Condensed Matter}, year={2016}, volume={29} }

The Josephson supercurrent through a hybrid Majorana-quantum dot-Majorana junction is investigated. We particularly analyze the effect of spin-selective coupling between the Majorana and quantum dot states, which only emerges in the topological phase and will influence the current through bent junctions and/or in the presence of magnetic fields in the quantum dot. We find that the characteristic behavior of the supercurrent through this system is quite counterintuitive, differing remarkably…

## 5 Citations

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## References

SHOWING 1-10 OF 47 REFERENCES

### Josephson ϕ0-junction in nanowire quantum dots

- Physics
- 2016

The Josephson effect describes supercurrent flowing through a junction connecting two superconducting leads by a thin barrier. This current is driven by a superconducting phase difference ϕ between…

### Tunnel spectroscopy of Majorana bound states in topological superconductor/quantum dot Josephson junctions

- Physics
- 2014

We theoretically investigate electronic transport through a junction where a quantum dot (QD) is tunnel coupled on both sides to semiconductor nanowires with strong spin-orbit interaction and…

### Detection of a Majorana fermion zero mode by a T-shaped quantum-dot structure

- Physics
- 2014

We investigate the electron transport through the T-shaped quantum-dot (QD) structure theoretically, by coupling a Majorana zero mode to the terminal QD. It is found that in the double-QD…

### Majorana fermions and a topological phase transition in semiconductor-superconductor heterostructures.

- PhysicsPhysical review letters
- 2010

The measurement of the supercurrent through the junction allows one to discern topologically distinct phases and observe a topological phase transition by simply changing the in-plane magnetic field or the gate voltage, which will be a direct demonstration of the existence of Majorana particles.

### Identifying the topological superconducting phase in a multiband quantum wire

- Physics
- 2015

How to distinguish the zero-bias peak (ZBP) caused by the Majorana fermions from that by the other effects remains a challenge in detecting the topological order of a quantum wire. In this paper we…

### Direct coupling between magnetism and superconducting current in the Josephson phi0 junction.

- PhysicsPhysical review letters
- 2008

The proposed mechanism of the phi{0} junction formation gives a direct coupling between the superconducting current and the magnetic moment in the weak link, which opens interesting perspectives for the superconductor spintronics.

### Observation of Majorana Fermions in a Nb-InSb Nanowire-Nb Hybrid Quantum Device

- Physics
- 2012

We report on the observation of excitation of Majorana fermions in a Nb-InSb nanowire quantum dot-Nb hybrid system. The InSb nanowire quantum dot is formed between the two Nb contacts by weak…

### Zero-bias peaks in the tunneling conductance of spin-orbit-coupled superconducting wires with and without Majorana end-states.

- PhysicsPhysical review letters
- 2012

It is shown that this system generically exhibits a (nonquantized) zero-bias peak even when the wire is topologically trivial and does not possess Majorana end states, by simulating the tunneling conductance for multiband wires with realistic amounts of disorder.

### Majorana Zero Mode Detected with Spin Selective Andreev Reflection in the Vortex of a Topological Superconductor.

- PhysicsPhysical review letters
- 2016

Recently, theory has predicted a Majorana zero mode (MZM) to induce spin selective Andreev reflection (SSAR), a novel magnetic property which can be used to detect the MZM. Here, spin-polarized…

### Majorana fermion induced resonant Andreev reflection.

- PhysicsPhysical review letters
- 2009

We describe experimental signatures of Majorana fermion edge states, which form at the interface between a superconductor and the surface of a topological insulator. If a lead couples to the Majorana…