EPSRC Photocomp
Mr Kostya Novoselov - University of Manchester
Image caption: Graphene Sunrise
Abstract: The actual measurements of the electronic capacitance of graphene in magnetic field. Due to so called “quantum capacitance" the measurements of capacitance of graphene samples are sensitive to electronic states. In magnetic field electrons move along circular orbits, which restricts the space they occupy and leads to them bunching on so called “Landau energy levels”, which are seen through high capacitance (represented by blue colour here). As the magnetic field squeezes electrons on tighter orbits, more and more of them can fit into a Landau level, which can be seen as a fun diagram of sun rays spreading from the centre of the image. At high magnetic field (top of the image) more subtle effects of degeneracy lifting and fractional quantum Hall effect can be noticed.
Mr Kostya Novoselov - University of Manchester
Image caption: Graphene Sunrise
Abstract: The actual measurements of the electronic capacitance of graphene in magnetic field. Due to so called “quantum capacitance" the measurements of capacitance of graphene samples are sensitive to electronic states. In magnetic field electrons move along circular orbits, which restricts the space they occupy and leads to them bunching on so called “Landau energy levels”, which are seen through high capacitance (represented by blue colour here). As the magnetic field squeezes electrons on tighter orbits, more and more of them can fit into a Landau level, which can be seen as a fun diagram of sun rays spreading from the centre of the image. At high magnetic field (top of the image) more subtle effects of degeneracy lifting and fractional quantum Hall effect can be noticed.