Influence of varying magnetic order in external magnetic field on the electronic structure and Fermi surface within the t-J model
V. I. Kuz'min+, S. V. Nikolaev+*, S. G. Ovchinnikov+*×
+Kirensky Institute of Physics SB of the RAS, 660036 Krasnoyarsk, Russia
*Siberian Federal University, 660041 Krasnoyarsk, Russia
×National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409 Moscow, Russia
Abstract
We investigate the electronic structure of the two-dimensional
t-J model in a transverse external static magnetic field with canted
long-range magnetic order using cluster perturbation theory. Distribution
of spectral weight in the whole range of fields from zero to ferromagnetic
saturation is explored. We demonstrate the possibility of a sharp change in a
distribution of spectral weight at the Fermi level
associated with the magnetic correlations when varying magnetic field.