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Topological superconductivity in two dimensions with mixed chirality
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
Ecole Polytech, CNRS, Ctr Phys Theor, F-91128 Palaiseau, France..
2015 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 92, no 14, 140503Article in journal (Refereed) Published
Abstract [en]

We find a mixed chirality d-wave superconducting state in the coexistence region between antiferromagnetism and interaction-driven superconductivity in lightly doped honeycomb materials. This state has a topological chiral d + id-wave symmetry in one Dirac valley but d - id-wave symmetry in the other valley and hosts two counterpropagating edge states, always protected in the absence of intervalley scattering. A first-order topological phase transition, with no bulk gap closing, separates the chiral d-wave state at small magnetic moments from the mixed chirality d-wave phase.

Place, publisher, year, edition, pages
2015. Vol. 92, no 14, 140503
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-266696DOI: 10.1103/PhysRevB.92.140503ISI: 000362896700002OAI: oai:DiVA.org:uu-266696DiVA: diva2:868888
Swedish Research CouncilGöran Gustafsson Foundation for promotion of scientific research at Uppala University and Royal Institute of TechnologySwedish Foundation for Strategic Research
Available from: 2015-11-12 Created: 2015-11-10 Last updated: 2015-11-12Bibliographically approved

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Black-Schaffer, Annica M.
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