Coupled wire model of symmetric Majorana surfaces of topological superconductors
Sharmistha Sahoo, Zhao Zhang, Jeffrey C. Y. Teo
DOI 10.1103/PhysRevB.94.165142 · Physical Review B
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Abstract
Time-reversal-symmetric topological superconductors in three spatial dimensions carry gapless surface Majorana fermions. They are robust against any time-reversal-symmetric single-body perturbation weaker than the bulk energy gap. We mimic the massless surface Majoranas by coupled wire models in two spatial dimensions. We introduce explicit many-body interwire interactions that preserve time-reversal symmetry and give energy gaps to all low-energy degrees of freedom. We show the gapped models generically carry nontrivial topological order and support anyonic excitations.
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