Abstract:
Modern nanoscale electronics encompasses many new and emerging sub-topics e.g. spintronics (magnetic memory, sensors, spin transistor), relativistic electronics (graphene, Weyl semimetals), topological electronics (topological insulators, Dirac-Weyl, quantum Hall), atomic electronics (nitrogen-vacancy-centers), molecular electronics (carbon nanotubes) and so forth.
In this talk, we will introduce recent advances in these topics as well as the underlying physics that support the fast development of research in these areas. The core concepts of non-equilibrium, size effects, perturbation, as well as gauge and Berry curvature are introduced. We also discuss the electronic environment in which all carrier transport takes place. The effect of ionic potential results in the band structure of metal, semiconductor and insulator. The effect of carrier interaction gives rise to electron gas, liquid and solid.
Brief Bio:
Seng Ghee Tan received his PhD (2006) and M.Eng (2001) from the National University of Singapore (NUS), and his B.Eng (1996) from the University of Malaya. He was a senior research fellow under the A-STAR of Singapore from 2006-2009. He later held the position of Assistant Professor with the NUS from 2009-2015 before leaving the NUS in 2015 to continue his career with A-STAR as a theoretical physicist until 2017. He was at the same time an editorial board member for the Scientific Reports (NPG). He is presently (2007 onwards) a Visiting Prof at the National Taiwan University (NTU).
In 2007, he predicted a physical effect known as the spin-orbit spin torque, and derived a modified-LLG equation [S.G. Tan et. al. arXiv: 0705.3502 (2007)] to support his prediction. The effect was confirmed by experiment in 2010, and is now used in the study of magnetic memory. In 2015, he predicted theoretically a conductivity correction to the 2D-spin Hall systems. In 2012, he wrote a book: “Introduction to the Physics of Nanoelectronics” (Woodheads Publishing, Elsevier). He has published over 160 journal papers in the emerging fields of spintronics, graphene, Dirac-Weyl, topological physics in materials and electronics. During his professorship with the NUS, he had supervised about 10 PhD students. He had taught many courses in quantum electronics (emerging), quantum transport in nanoscale devices (new materials), quantum spintronics, at both NUS (Singapore) and NTU (Taiwan).