Magnetic breakdown induced peierls transition.
We predict a new type of phase transition in a quasi-one-dimensional system of interacting electrons at high magnetic fields, the stabilization of a density wave which transforms a two-dimensional open Fermi surface into a periodic chain of large pockets with small distances between them. We show that quantum tunneling of electrons between the neighboring closed orbits enveloping these pockets transforms the electron spectrum into a set of extremely narrow energy bands and gaps that decreases the total electron energy, thus leading to a magnetic breakdown induced density wave ground state analogous to the well-known instability of the Peierls type.
Kadigrobov
A M
AM
Theoretische Physik III, Ruhr-Universität Bochum, D-44801 Bochum, Germany.
Bjelis
A
A
Radić
D
D