This week’s selected image comes from a recent Journal of Physics: Condensed Matter paper from Subhasree Pradhan. She used exact diagonalisation and Monte Carlo methods to compare spinless, interacting electrons on finite size triangular and square lattices, highlighting interplay between the applied magnetic field and electronic correlation.

The Hofstadter butterfly: single particle energy spectrum as a function of magnetic flux per plaquette alpha = p/q in an infinite square lattice. Taken from J. Phys. Cond. Mat. 28 505502 © 2016 IOP Publishing Ltd.

Read More:

• Hofstadter butterfly in the Falicov–Kimball model on some finite 2D lattices.
• A ground state phase diagram of a spinless, extended Falicov–Kimball model on the triangular lattice.
• An extended Falicov-Kimball model on a triangular lattice.

Categories: JPhys+