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SUMMARY:From two to three dimensions: Impact of stacking order on electron
 ic properties of graphene and graphite - Marcin Mucha-Kruczynski (Bath)
DTSTART:20250314T140000Z
DTEND:20250314T153000Z
UID:TALK229273@talks.cam.ac.uk
CONTACT:Bo Peng
DESCRIPTION:Despite many decades of intense studies\, graphite still surpr
 ises us by the richness of its electronic and optoelectronic properties. T
 his is largely due to the van der Waals nature of its interlayer bonding c
 oexisting with a substantial hybridization between the electronic states i
 n the consecutive layers. In my talk\, I will introduce some of the struct
 ures utilizing graphene\, a single honeycomb layer of carbon\, as a basic 
 building block: from two-dimensional multilayer and twistronic graphene to
  three-dimensional Bernal and rhombohedral graphite. I will focus on how e
 lectronic coupling between the layers allows for engineering of the low-en
 ergy electronic properties of the resulting stacks\, including formation o
 f topological surface states in rhombohedral graphite. Motivated by this a
 nd the experimental breakthroughs in the fabrication of graphene stacks\, 
 I will then explore electronic properties of interfaces between semi-infin
 ite crystals: systems with one foot in both the flatland of graphene and t
 he bulk world of graphite. In particular\, I will discuss how interfaces b
 etween rhombohedral graphite crystals might allow tracking of the transiti
 on between topologically non-trivial and trivial electronic phases.
LOCATION:TCM Seminar Room
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