ABC...z Seminar Series: Thursday, December 13th: Imaging Electronic Correlations in Twisted Bilayer Graphene

Event Date: 

Thursday, December 13, 2018 - 3:30pm

Event Date Details: 

Light refreshments served at 3:30 seminar begins at 3:45 and lasts one hour, including questions.

Event Location: 

  • Broida 1640
  • ABC...z Seminar Series

Twisted bilayer graphene with a twist angle of around 1.1° features isolated flat electronic bands that form a strongly correlated gate tunable electronic system. Transport experiments have revealed formation of correlated insulating and superconducting phases in this system, but the microscopic understanding of these phases is still elusive. We investigate properties of twisted bilayer graphene by probing local tunneling density of states using scanning tunneling microscopy and observe that the flat bands get highly deformed when they cross the Fermi level due to strong electron-electron interaction. Our results provide basis for microscopic understanding of correlated phases in small angle twisted bilayer graphene.

Stevan Nadj-Perge,Caltech