Topological superconductivity in two dimensions with mixed chirality

A. M. Black-Schaffer; K. Le Hur

doi:10.1103/PhysRevB.92.140503

Topological superconductivity in two dimensions with mixed chirality

A. M. Black-Schaffer
, K. Le Hur

Uppsala University

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Article number	140503
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	92
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevB.92.140503
Publication status	Published - 16 Oct 2015

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title = "Topological superconductivity in two dimensions with mixed chirality",

abstract = "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.",

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N2 - 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.

AB - 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.

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DO - 10.1103/PhysRevB.92.140503

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Topological superconductivity in two dimensions with mixed chirality

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