Magnetic field effects on the superconducting and quantum critical properties of layered systems with Dirac electrons

摘要: Abstract We study the effects of an external magnetic field on superconducting properties a quasi-two-dimensional system Dirac electrons at arbitrary temperature. An explicit expression for gap is obtained as function temperature, and coupling parameter ( λ R ) . From this, we extract B × , T phase diagrams. The last one shows linear decay critical small values thereof, which similar to behavior observed experimentally in copper doped dichalcogenide Cu x TiSe 2 also intercalated graphite. second one, presents dependent temperature c that resembles high- cuprates underdoped region first exhibits quantum transition connecting normal phase, occurring line corresponds parameter. This should be planar materials containing electrons, such