Majorana corner modes and tunable braiding in an altermagnet-superconductor heterostructure

@misc{gao2026majorana,
  title = {{Majorana corner modes and tunable braiding in an altermagnet-superconductor heterostructure}},
  author = {Yingli Gao and Kai Zhang and Ling-Zheng Meng and Junpeng Hou and Ning Li and Ya-Jie Wu},
  howpublished = {arXiv},
  year = {2026},
  month = nov,
  doi = {10.48550/arxiv.2611.07645},
  eprint = {2611.07645},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2611.07645},
}

TY  - UNPB
TI  - Majorana corner modes and tunable braiding in an altermagnet-superconductor heterostructure
AU  - Yingli Gao
AU  - Kai Zhang
AU  - Ling-Zheng Meng
AU  - Junpeng Hou
AU  - Ning Li
AU  - Ya-Jie Wu
PY  - 2026
DA  - 2026/11/05
PB  - arXiv
DO  - 10.48550/arxiv.2611.07645
UR  - https://arxiv.org/abs/2611.07645
AB  - Zeeman fields are usually required for realizing and manipulating Majorana corner modes at the cost of suppressed superconducting pairing. Altermagnetism offers a new route toward realizing Majorana corner modes under zero net external magnetic fields. Here we propose a theoretical scheme to host Majorana corner modes in a honeycomb-lattice altermagnet-superconductor heterostructure. In contrast to previous studies on square lattices, altermagnetism yields distinct effective low-energy edge masses on various inequivalent edges of the honeycomb lattice. Within a low-energy edge-theory framework, we establish the conditions under which Majorana corner modes emerge for both bearded and zigzag edge terminations. We further explicitly construct a complete set of Clifford gates by tuning the altermagnetic anisotropy and chemical potential of the heterostructure. Our results provide a promising platform for the realization and manipulation of Majorana corner modes.
ER  -