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arXiv · 1109.6681

Competition between d-wave and topological p-wave superconductivity in the doped Kitaev-Heisenberg model

Timo Hyart·Anthony R. Wright·Giniyat Khaliullin·Bernd Rosenow
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Abstract

The competition between Kitaev and Heisenberg interactions away from half filling is studied for the the hole-doped Kitaev-Heisenberg $t$-$J_K$-$J_H$ model on a honeycomb lattice. While the isotropic Heisenberg coupling supports a time-reversal violating d-wave singlet state, we find that the Kitaev interaction favors a time-reversal invariant p-wave superconducting phase, which obeys the rotational symmetries of the microscopic model, and is robust for $J_H \mu_c$.

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Timo Hyart, Anthony R. Wright, Giniyat Khaliullin, Bernd Rosenow. 2011-09-29. Competition between d-wave and topological p-wave superconductivity in the doped Kitaev-Heisenberg model. https://doi.org/10.1103/physrevb.85.140510

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