Two dimensional frustrated magnets in high magnetic field

Abstract

Frustrated magnets in high magnetic field have a long history of offering beautiful surprises to the patient investigator. Here we present the results of extensive classical Monte Carlo simulations of a variety of models of two dimensional magnets in magnetic field, together with complementary spin wave analysis. Striking results include (i) a massively enhanced magnetocaloric effect in antiferromagnets bordering on ferromagnetic order, (ii) a route to an $m=1/3$ magnetization plateau on a square lattice, and (iii) a cascade of phase transitions in a simple model of AgNiO${}_2$.

4 pages, proceedings of HFM2008

References in corpus (2)

• Finite temperature properties and frustrated ferromagnetism in a square lattice Heisenberg model
• Magnetocaloric effect in the frustrated square lattice J1-J2 model