PhD defence: Hydrodynamics of charged Dirac electrons

PhD defence of K. Pongsangangan


In a conventional theory of thermoelectric transport, electrons in metals behave independently when they conduct electric and heat currents. Our study shows that this is not always the case. When the dimensionality of the system is reduced, their interactions can become more important. Since electrons are charged, they interact with each other via the so-called Coulomb interaction. One manifestation of the interactions is that they facilitate electrons to work collectively, which in turn gives rise to other heat-carriers known as plasmons. We showed that in a two-dimensional material known as graphene, plasmons can conduct a significant amount of heat. This makes graphene a good heat conductor.

Start date and time
End date and time
Academiegebouw, Domplein 29
PhD candidate
K. Pongsangangan
Hydrodynamics of charged Dirac electrons
PhD supervisor(s)
prof. dr. ir. H.T.C. Stoof
dr. L. Fritz