Phase diagram and Chiral Magnetic Effect in Dirac Semimetals from Lattice Simulation

D.L. Boyda, V.V. Braguta, M.I. Katsnelson, A.Yu. Kotov, M. Della Morte, P. Fritzsch, E. Gámiz Sánchez, C. Pena Ruano
2018 EPJ Web of Conferences  
Dirac Semimetals Na 3 Bi and Cd 3 As 2 are recently discovered materials, which low energy electronic spectrum is described by two flavours of massless 3+1D fermions. In order to study electronic properties of these materials we formulated lattice field theory with rooted staggered fermions on anisotropic lattice. It is shown that in the limit of zero temporal lattice spacing this theory reproduces effective theory of Dirac semimetals. Using the lattice field theory we study the phase diagram
more » ... the phase diagram of Dirac semimetals in the plane effective coupling constant -Fermi velocity anisotropy. We also measure conductivity of Dirac Semimetals within lattice field theory in external magnetic field. Our results confirm the existence of Chiral Magnetic Effect in Dirac Semimetals.
doi:10.1051/epjconf/201817503001 fatcat:ysmpwzxuwrfcpbjwazvesvmab4