Positively Charged Holes in Semiconductor Nanostructures
Speaker: Prof. Alex Hamilton
Thomson discovered the electron in 1897, and in 1879 Hall showed that negatively charged electrons in a metal carry a current and can be deflected by a magnetic field. In 1880 Rowland showed that electrical current could also be carried by positively charged particles - which we now call holes, following the development of semiconductor band theory in the early 1900’s. Given that the theory of solid state band structure is almost 100 years old, and that integrated circuits use both negatively charged electrons and positively charged holes to operate, we should have an excellent understanding of how electrons and holes behave in quantum devices.