De Haas-van Alphen effect as a first-order electronic topological transition
Ya.M. Blanter a
M.I. Kaganov b
D.V. Posvyanskii c
a Moscow State Institute of Steel and Alloys (Technology University), Leninskii prosp. 4, Moscow, 117936, Russian Federation
b Kapitza Institute of Physical Problems, Russian Academy of Sciences, ul. Kosygina 2, Moscow, 117334, Russian Federation
c Institute of Radio Engineering and Electronics, Russian Academy of Sciences, ul. Mokhovaya 11, Moscow, 125009, Russian Federation
The de Haas-van Alphen effect and the behaviour of a superlattice in a quantising magnetic field can be described in terms of an electronic topological transition. Near the transition, the thermodynamic stability condition is shown to break down, thus eliminating the 11/2-order transition and giving rise to a first-order phase transition. The latter leads to the formation of diamagnetic Condon domains.