Naslov
Peierls-type structural phase transition in a crystal induced by magnetic breakdown

Autori
Kadigrobov, Anatoly ; Bjeliš, Aleksa ; Radić, Danko

Izvornik
European physical journal B : condensed matter physics (1434-6028) 86 (2013), 6; 276-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
magnetic breakdown; Peierls transition; density wave; quasi one-dimensional

Sažetak
We predict a new type of phase transition in a quasi-two dimensional system of electrons at high magnetic fields, namely 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. The 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 which decreases the total electron energy, thus leading to a magnetic breakdown induced density wave (MBIDW) ground state. We show that this DW instability has some qualitatively different properties in comparison to analogous DW instabilities of Peierls type ; e.g. the critical temperature of the MBIDW phase transition arises and disappears in a peculiar way with a change of the inverse magnetic field.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA