# π /2-Josephson junction as a topological superconductor

@article{Yang2018J, title={$\pi$ /2-Josephson junction as a topological superconductor}, author={Zhesen Yang and Shengshan Qin and Qiang Zhang and Chen Fang and Jiangping Hu}, journal={Physical Review B}, year={2018} }

We show that the time reversal symmetry inevitably breaks in a superconducting Josephson junction formed by two superconductors with different pairing symmetries dubbed as i-Josephson junction. While the leading conventional Josephson coupling vanishes in such an i-Josephson junction, the second order coupling from tunneling always generates chiral superconductivity orders with broken time reversal symmetry. Josephson frequency in the i-junction is doubled, namely $\omega = 4eV /h$. The result…

## 8 Citations

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