Author(s): Johannes Knolle and Nigel R. Cooper
The Fermi surface of a metal is typically detected via quantum oscillations of its thermodynamic properties in response to a changing applied magnetic field. A microscopic model shows that these oscillations also occur in a band insulator, despite the absence of a Fermi surface.
[Phys. Rev. Lett. 115, 146401] Published Mon Sep 28, 2015