Two dimensional frustrated magnets in high magnetic field

Details Two dimensional frustrated magnets in high magnetic field Two dimensional frustrated magnets in high magnetic field

2009-03-25

arxiv.org/abs/0903.4370v1

J. Phys.: Conf. Ser. 145, 012075 (2009)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, proceedings of HFM2008

Scientific paper

10.1088/1742-6596/145/1/012075

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$_2$.

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