External Seminar Archive

Rydberg Excitons in Cuprous Oxide – Fred Combley Colloquium

Rydberg Excitons in Cuprous Oxide Manfred Bayer Experimentelle Physik 2, Fakultät Physik, TU Dortmund, D-44227 Dortmund, Germany   Excitons determine the optical properties of semiconductors. Their description as hydrogen atom-like…

Read More

Graphene in van der Waals heterostructures and transistors

Graphene tunnelling transistors are made by sandwiching a nanometre-thick barrier layer of hexagonal boron nitride (hBN) between two monolayer graphene electrodes.  The tunnel current is controlled by the bias voltage…

Read More

Atomic and electronic structure in van der Waals heterostructures

Two-dimensional materials (2DM) have strong in-plane bonding, but typically only weak van der Waals interactions with neighbouring material. It is this anisotropy which allows them to be isolated as layers,…

Read More

gmaili.net gmail.com login problems with gmail account and sign in tips