V. I. Kuz'min, S. V. Nikolaev, S. G. Ovchinnikov, “Influence of varying magnetic order in external magnetic field on the electronic structure and Fermi surface within the $t$–$J$ model”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2016, Volume 103, Issue 2,Pages 132

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CONDENSED MATTER

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^a, S. V. Nikolaev^ab, S. G. Ovchinnikov^abc

^a Kirensky Institute of Physics SB of the RAS, 660036 Krasnoyarsk, Russia
^b Siberian Federal University, 660041 Krasnoyarsk, Russia
^c 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.

Received: 11.11.2015
Revised: 11.12.2015

Language: English

DOI: 10.7868/S0370274X16020107