Miguel Monteverde I Doped twisted stacking faults in graphite systems and hints of superconductivity

Miguel Monteverde, LPS Orsay Université Paris Saclay

Since graphene discovery in 2005, more complex stacked structures such as twisted bilayers  showing a Moiré superlattice has started being realized and recently (2018) the topic has attracted renewed interest with a wide collection of different twisted stacked structures. Rich physics arise from these systems including ferromagnetism, superconductivity and correlated insulators which seems to be originated from the appearance of flat bands at the Fermi level due to these Moiré superstructures.

In this presentation I will address how we have achieved to synthesize macroscopic samples of a collection of doped twisted stacking faults in graphite, how this system differs from traditional nanofabricated twisted stacked structures and why these systems are worth to be studied. In particular, I will focus in superconductivity hints in these systems.

Y. Cao, et al. “Unconventional superconductivity in magic-angle graphene superlattices”, Nature 556, (2018) 43

S. Layek, et al. “Possible high temperature superconducting transitions in disordered graphite obtained from room temperature deintercalated KC8”, Carbon 201, (2022) 667