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arXiv · 1602.07329

Ferromagnetism and superconductivity with possible $p+ip$ pairing symmetry in partially hydrogenated graphene

Hong-Yan Lu·Lei Hao·Rui Wang·C. S. Ting
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Abstract

By means of first-principles calculations, we predict two new types of partially hydrogenated graphene systems: C$_{6}$H$_{1}$ and C$_{6}$H$_{5}$, which are shown to be ferromagnetic (FM) semimetal and FM narrow-gap semiconductor, respectively. When properly doped, the Fermi surface of the two systems consists of an electron pocket or six hole patches in the first Brillouin zone with completely spin-polarized charge carries. If superconductivity exists in these systems, the stable pairing symmetries are shown to be $p+ip$ for electron doped case, and anisotropic $p+ip$ for hole doped case. The predicted systems may provide fascinating platforms for studying the novel properties of ferromagnetism and triplet-pairing superconductivity as well as two-dimensional spintronics.

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Hong-Yan Lu, Lei Hao, Rui Wang, C. S. Ting. 2016-06-30. Ferromagnetism and superconductivity with possible $p+ip$ pairing symmetry in partially hydrogenated graphene. https://doi.org/10.1103/physrevb.93.241410

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