2015/04/30 by Shingo Kobayashi, Masatoshi Sato · 1 citation
Physics and Astronomy · #cond-mat.supr-con #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevlett.115.187001
published as Phys. Rev. Lett. 115, 187001 (2015) · 6 pages, 2 figures
arxiv created 2015/11/02 · arxiv updated 2015/11/03
Dirac semimetals host bulk band-touching Dirac points and a surface Fermi loop. We develop a theory of superconducting Dirac semimetals. Establishing a relation between the Dirac points and the surface Fermi loop, we clarify how the nontrivial topology of Dirac semimetals affects their superconducting state. We note that the unique orbital texture of Dirac points and a structural phase transition of the crystal favor symmetry-protected topological superconductivity with a quartet of surface Majorana fermions. We suggest possible application of our theory to recently discovered superconducting states in Cd3As2.