Study of Charge Carrier Transport in Graphene and Graphite as Two Dimensional and Quasi-Two Dimensional Materials and Their Interfaces

Abstract

This dissertation would never have been completed without his support and guidance. His lecture was a perfect combination of academic and real-life lessons. Currently, I am working on finishing my PhD degree, the academic degree that I never imagined I could achieve. I would like to give my most grateful thanks to Dr. Larkins for helping me to make it happen. I will never forget the invaluable experience at the

Evidence of vortices and mixed-state superconductivity in phosphorus-doped graphene. Part I (Nernst)

“…The samples were doped with phosphorus by ion implantation or phosphorus doped-while-grown graphene on HOPG substrates using plasma CVD. Details of sample preparation are given in our prior publications [7][8][9][10][11].…”

“…Considerable effort has gone into studying the possibility of graphene being a hightemperature superconductor [5,6]. The work that has preceded this paper has been focused on resistance and susceptibility measurements [7][8][9][10][11]. The resistance versus temperature curves in all of the work thus far have had a small but measurable residual resistance at low temperatures.…”

“…Prior work on doped HOPG and graphene [7][8][9][10][11] showed that the sample's resistivity, although quite low, never went to zero, even at low temperatures. Magnetic flux-flow or vortex flow resistance has been identified as a potential reason for the non-zero resistance at low temperatures [17,18].…”