Los Alamos National Laboratory and Nordita
past 25 years have witnessed a rapid expansion of research
into materials which host relativistic
Discoveries of superfluid phases in 3He, high temperature superconductors, graphene and topological insulators have
brought into focus materials in which the elementary excitations, or quasiparticles are described by the same Dirac equation
that governs relativistic particles. This class of materials, called Dirac materials, exhibits unusual universal
features: Klein tunneling, chirality and impurity resonances.
Dirac materials hold a significant promise for applications as they can be tuned in response to small changes in parameters.
I will also discuss the next step in the evolution of the field: control of driven Dirac matter. The field is now exploring the tunability
of nodal states as we apply external drives to manipulate fermions and bosons in graphene, topological insulators and oxide
T. Wehling, A. M. Black-Schaffer and A. V. Balatsky, Dirac materials, Advances in Physics 63, 76, (2014).
C. Triola, A. Pertsova, R Markiewicz and A. V. Balatsky, Excitonic Gap Formation in Pumped Dirac Materials,
Phys. Rev. B 95, 205410 (2017) .
M. Geilhufe, S. Borysov and A.V. Balatsky, 3-dimensional organic Dirac-line material due to non-symmorphic
symmetry. arXiv:1610.07815 (use of the database to search for Dirac Materials)